1. A rotatable stapling head of a surgical stapler comprising:
a staple cartridge, a staple driver, an annular scalpel, a compression rod, a staple casing, and a rotating assembly;
wherein said staple cartridge, staple driver, annular scalpel, compression rod, staple casing, and rotating assembly constitute a forward-moving and rotating mechanism;
wherein said rotating assembly includes a rotating sleeve and a spiral track member;
wherein said staple casing comprises a tubular casing with an inner step shaped cavity inside which is disposed a support tube;
wherein the staple driver, which conforms to the shape of the inner wall of the staple casing, is disposed between the support tube and the inner wall of the staple casing;
wherein a scalpel cavity is formed in front of the staple casing and the staple driver, which matches the annular scalpel;
wherein the annular scalpel is sleeved outside the support tube and disposed inside the scalpel cavity;
wherein the rotating sleeve has therein a concave-convex structure selected from the group consisting of flutes and bosses;
wherein the spiral track member is disposed on the support tube inside the staple casing so as to match with the concave-convex structure of the rotating sleeve;
wherein a front circular rim of the staple casing is connected with the staple cartridge and the front circular rim of the staple driver contacts with the staple cartridge;
wherein the annular scalpel is connected with the staple driver and the support tube by means of the rotating sleeve; and
wherein said annular scalpel rotates relative to the staple casing within said forward-moving and rotating mechanism, while said annular scalpel, said staple driver and said compression rod move axially.
2. The rotatable stapling head of a surgical stapler according to claim 1, wherein the rotating sleeve is fixed with the annular scalpel;
wherein a slide mechanism is disposed at the bottom of the rotating sleeve; and
wherein a hook is disposed at the bottom of the front cavity of the staple driver so as to hook with the bottom of the rotating sleeve.
3. The rotatable stapling head of a surgical stapler according to claim 2, wherein said slide mechanism comprises balls, ball collars and gaskets.
4. The rotatable stapling head of a surgical stapler according to claim 1, wherein said rotating sleeve is disposed at the inner bottom of the annular scalpel; and
wherein a hook is disposed at the bottom of the front cavity of the staple driver so as to hook with the bottom of the annular scalpel.
5. The rotatable stapling head of a surgical stapler according to claim 1, wherein said rotating sleeve is disposed at the outer bottom of the annular scalpel; and
wherein a hook is disposed at the bottom of the front cavity of the staple driver so as to hook with the bottom of the rotating sleeve.
6. The rotatable stapling head of a surgical stapler according to claim 1, wherein the spiral track member is a spiral track directly disposed on the support tube; and
wherein the rotating sleeve and the support tube are connected by means of the spiral track on the support tube.
7. The rotatable stapling head of a surgical stapler according to claim 1, wherein said spiral track member is a fixed spiral sleeve with the spiral track disposed on the outer wall thereof, and the fixed spiral sleeve is fixed outside the support tube; and
wherein the support tube has a threaded insert on its front end with a limit fastening nut disposed thereon.
8. The rotatable stapling head of a surgical stapler according to claim 1, wherein said staple driver and the compression rod are disposed separately and smoothly touch with each other.
9. A rotatable stapling head of a surgical stapler comprising: a staple cartridge, a staple driver, an annular scalpel, a compression rod, a staple casing, and a rotating assembly;
wherein said staple cartridge, staple driver, annular scalpel, compression rod, staple casing, and rotating assembly constitute a forward-moving and rotating mechanism;
wherein said rotating assembly comprises a connecting rod assembly;
wherein said staple casing comprises a tubular casing with an inner step shaped cavity inside which is disposed a support tube;
wherein the staple driver, which conforms to the shape of the inner wall of the staple casing, is disposed between the support tube and the inner wall of the staple casing;
wherein a scalpel cavity is formed in front of the staple casing and the staple driver, which matches the annular scalpel;
wherein the annular scalpel is sleeved outside the support tube and disposed inside the scalpel cavity;
wherein a front circular rim of the staple casing is connected with the staple cartridge and the front circular rim of the staple driver contacts with the staple cartridge;
wherein the annular scalpel is connected with the staple driver and the support tube by means of the connecting rod assembly; and
wherein said annular scalpel rotates relative to the staple casing within said forward-moving and rotating mechanism, while said annular scalpel, said staple driver and said compression rod move axially.
10. The rotatable stapling head of a surgical stapler according to claim 9, wherein said connecting rod assembly comprises a fastening nut, a rotating sleeve, first hinge mounts, pins, connecting rods, a hinge mount sleeve, second hinge mounts and a fastening bolt;
wherein a threaded insert is disposed on a stepped outer wall of the support tube in the annular scalpel;
wherein the hinge mount sleeve is disposed on a shoulder of the stepped outer wall of the support tube below the threaded insert;
wherein the first hinge mounts are disposed on the hinge mount sleeve;
wherein a fastening nut is disposed on the first hinge mounts by means of the threaded insert; and
wherein the bottom of each of the first hinge mounts is connected movably with one end of one of the connecting rods by means of one of the pins, the other end of the connecting rod is connected movably with one of the second hinge mounts which is disposed in the rotating sleeve that fixed below the front of the staple driver by means of one of the pins.
11. A rotatable stapling head of a surgical stapler comprising a staple cartridge, a staple driver, an annular scalpel, a compression rod, a staple casing, and a rotating assembly;
wherein said staple cartridge, staple driver, annular scalpel, compression rod, staple casing, and rotating assembly constitute a forward-moving and rotating mechanism;
wherein said rotating assembly comprises an inclined surface & rotating sleeve assembly;
wherein said staple casing comprises a tubular casing with an inner step shaped cavity inside which is disposed a support tube;
wherein the staple driver, which conforms to the shape of the inner wall of the staple casing, is disposed between the support tube and the inner wall of the staple casing;
wherein a scalpel cavity is formed in front of the staple casing and the staple driver, which matches the annular scalpel;
wherein the annular scalpel is sleeved outside the support tube and disposed inside the scalpel cavity;
wherein a front circular rim of the staple casing is connected with the staple cartridge and the front circular rim of the staple driver contacts with the staple cartridge;
wherein the annular scalpel is connected with the staple driver and the support tube by means of the inclined surface & rotating sleeve assembly; and
wherein said annular scalpel rotates relative to the staple casing within said forward-moving and rotating mechanism, while said annular scalpel, said staple driver and said compression rod move axially relative.
12. The rotatable stapling head of a surgical stapler according to claim 11, wherein said inclined surface & rotating sleeve assembly comprises a connecting sleeve, a rotating sleeve, a threaded insert and a fastening nut;
wherein the threaded insert is disposed at the front of the support tube; the connecting sleeve and the fastening nut are fixed respectively outside the threaded insert;
wherein inclined surfaces are disposed on the outer wall of the connecting sleeve;
wherein the rotating sleeve is hinged at the inner bottom of the annular scalpel with inclined surfaces disposed thereon which match with the inclined surfaces disposed on the connecting sleeve; and
wherein a hook disposed at the bottom of the front of the staple driver goes through into the bottom of the annular scalpel so as to hook with the bottom of the rotating sleeve.
13. The rotatable stapling head of a surgical stapler according to claim 11, wherein said inclined surface & rotating sleeve assembly comprises a connecting sleeve, a rotating sleeve, a threaded insert and a fastening nut;
wherein the threaded insert is disposed at the front of the support tube;
wherein the connecting sleeve and the fastening nut are fixed respectively outside the threaded insert;
wherein inclined surfaces are disposed on the outer wall of the connecting sleeve;
wherein the rotating sleeve is hinged at the outer bottom of the annular scalpel with inclined surfaces disposed thereon which match with the inclined surfaces disposed on the connecting sleeve; and
wherein a hook is disposed at the bottom of the front of the staple driver so as to hook with the bottom of the rotating sleeve.
14. A rotatable stapling head of a surgical stapler comprising: a staple cartridge, a staple driver, an annular scalpel, a compression rod, a staple casing, and a rotating assembly;
wherein said staple cartridge, staple driver, annular scalpel, compression rod, staple casing, and rotating assembly constitute a forward-moving and rotating mechanism;
wherein said rotating assembly comprises a string & rotating sleeve assembly;
wherein said staple casing comprises a tubular casing with an inner step shaped cavity inside which is disposed a support tube;
wherein the staple driver, which conforms to the shape of the inner wall of the staple casing, is disposed between the support tube and the inner wall of the staple casing;
wherein a scalpel cavity is formed in front of the staple casing and the staple driver, which matches the annular scalpel;
wherein the annular scalpel is sleeved outside the support tube and disposed inside the scalpel cavity;
wherein a front circular rim of the staple casing is connected with the staple cartridge and the front circular rim of the staple driver contacts with the staple cartridge;
wherein the annular scalpel is connected with the staple driver and the support tube by means of the string & rotating sleeve assembly; and
wherein said annular scalpel rotates relative to the staple casing within said forward-moving and rotating mechanism, while said annular scalpel, said staple driver and said compression rod move axially.
15. The rotatable stapling head of a surgical stapler according to claim 14, wherein said the string & rotating sleeve assembly comprises a rotating sleeve, a string lock, a string and a torsion spring;
wherein the rotating sleeve is sleeved outside the support tube and fixed at the outer bottom of the annular scalpel;
wherein the upper of the rotating sleeve is connected with the outer wall of the support tube by means of the torsion spring;
wherein the string is disposed below the rotating sleeve with one end of the string fixed at the bottom of the rotating sleeve, and the other end of the string goes through out of the staple casing to be fixed with the string lock; and
wherein a hook is disposed at the bottom of the front cavity of the staple driver so as to hook with the bottom of the rotating sleeve.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A system for a stacked \u0394VBE generator for generating a \u0394VBE, comprising:
an error amplifier configured to generate an output based on an error signal;
a first stack of the \u0394VBE generator for producing a first \u0394VBE, the first stack being coupled to the error amplifier to form a closed loop and including a first pair of transistors;
a second stack of the \u0394VBE generator for producing a second \u0394VBE, the second stack being coupled to the first stack and including a second pair of transistors,
a first resistor at which the first \u0394VBE is formed, the first resistor being coupled between a base of a first transistor in the first pair and a base of a first transistor in the second pair, and
a second resistor at which the second \u0394VBE is formed, the second resistor being coupled between a base of a second transistor in the first pair and a base of a second transistor in the second pair, wherein
the \u0394VBE is determined as the sum of first voltage across the first resistor and second voltage across the second resistor.
2. The system of claim 1, further comprising a third resistor and a third transistor serially connected to the first and second resistors, wherein the second resistor is connected to the output of the error amplifier.
3. The system of claim 1, further comprising:
a current source coupled to a power supply; and
a diode connected fourth transistor having its collector connected to the current source and its emitter connected to the ground.
4. The system of claim 2, wherein the first stack further comprises:
a fifth transistor having emitter coupled to emitters of the first and second transistors in the first pair, collector of the first transistor in the first pair connecting to a negative input of the error amplifier, and collector of the second transistor in the second pair connecting to a positive input of the error amplifier;
fourth and fifth resistors connecting the respective collectors of the first and second transistors in the first pair to the power supply;
the fifth transistor having its base coupled to the gate of the diode connected fourth transistor, having its collector coupled to the emitters of the first and second transistors in the first pair, and having its emitter connected to the ground.
5. The system of claim 2, wherein
the third transistor is a diode connected transistor;
emitter of the third transistor is connected to the ground; and
base and collector of the third transistor are connected to the third resistor.
6. The system of claim 4, wherein the second stack further comprises:
a fifth transistor having emitter coupled to emitters of the first and second transistors in the second pair, collector of the first transistor in the second pair connecting to the collector of the first transistor in the second pair, and collector of the second transistor in the second pair connecting to the collector of the second transistor in the first pair; and
the sixth transistor having its emitter connected to the ground, having its base connected to the base of the fifth transistor, and having its collector coupled to the emitters of the first and second transistors in the second pair.
7. The system of claim 6, wherein the first transistor in the second pair is coupled to the output of the error amplifier.
8. The system of claim 6, wherein
the emitters of the first and second transistors in the first pair are connected to a first cross-coupled VBE loop; and
the emitters of the first and second transistors in the second pair are connected to a second cross-coupled VBE loop.
9. The system of claim 8, wherein the first cross-coupled VBE loop comprises:
serially connected seventh transistor and sixth resistor where the collector of the seventh transistor is connected to the emitter of the third transistor and emitter of the seventh transistor is serially connected to the sixth resistor, which is connected to collector of the third transistor;
serially connected eighth transistor and seventh resistor where the collector of the eighth transistor is connected to the emitter of the second transistor in the first pair and emitter of the eighth transistor is serially connected to the seventh resistor, which is connected to collector of the fifth transistor.
10. The system of claim 9, wherein the base of the seventh transistor is connected to the collector of the eighth transistor and the base of the eighth transistor is connected to the collector of the seventh transistor.
11. The system of claim 8, wherein the second cross-coupled VBE loop comprises:
serially connected ninth transistor and eighth resistor where the collector of the eighth transistor is connected to the emitter of the second transistor in the second pair and emitter of the eighth transistor is connected to the eighth resistor, which is connected to the collector of the sixth transistor;
serially connected tenth transistor and ninth resistor where the collector of the tenth transistor is connected to the emitter of the first transistor in the first second pair and emitter of the tenth transistor is connected to the ninth resistor, which is connected to the collector of the sixth transistor.
12. The system of claim 11, wherein the base of the ninth transistor is connected to the collector of the tenth transistor and the base of the tenth transistor is connected to the collector of the ninth transistor.
13. The system of claim 6, wherein
the emitters of the first and second transistors in the first pair are connected to first and second diode connected transistors; and
the emitters of the first and second transistors in the second pair are connected to third and fourth diode connected transistors.
14. The system of claim 13, wherein:
collector of the first diode connected transistor is connected to the emitter of the first transistor in the first pair and emitter of the first diode connected transistor connected to collector of the fifth transistor; and
collector of the second diode connected transistor is connected to the emitter of the second transistor in the first pair and emitter of the second diode connected transistor is connected to collector of the fifth transistor.
15. The system of claim 13, wherein:
collector of the third diode connected transistor is connected to the emitter of the second transistor in the second pair and emitter of the third diode connected transistor is connected to collector of the sixth transistor; and
collector of the fourth diode connected transistor is connected to the emitter of the first transistor in the second pair and emitter of the fourth diode connected transistor is connected to collector of the sixth transistor.
16. The system of claim 1, wherein the first stack is identical to the second stack and the individual \u0394VBE generated by the first stack is the same as the individual \u0394VBE generated by the second stack.
17. The system of claim 1, wherein input voltage for the stacked \u0394VBE generator is the same as that for the first stack.
18. A system for a k-stacked \u0394VBE generator for generating a \u0394VBE, where k is greater than 1, comprising:
an error amplifier configured to generate an output based on an error signal in a closed loop configuration;
a first stack of the \u0394VBE generator for producing a first \u0394VBE, the first stack being coupled to the error amplifier to provide the error signal to the error amplifier, and including a first pair of transistors; and
second to kth stacks of the \u0394VBE generator for producing a second \u0394VBE to a kth \u0394VBE, respectively, the second to kth stacks being coupled to the first stack and including a second to kth pairs of transistors, wherein
the first stack includes a first resistor at which the first \u0394VBE is formed, the first resistor being coupled between bases of transistors in the first pair of transistors, the second to kth stacks respectively include second to kth resistors at which the second \u0394VBE to the kth \u0394VBE are formed, the second to kth resistors being coupled between bases of transistors in the second to kth pairs of transistors, respectively, and
the \u0394VBE is determined as the sum of first to kth voltages across the first to kth resistors.
19. The system of claim 18, wherein the first stack is identical to any of the 2nd-kth stacks and the individual \u0394VBE generated by the first stack equals to any individual \u0394VBEs generated by any of the k\u22121 stacks so that the \u0394VBE is k times an individual \u0394VBE.
20. The system of claim 18, wherein the first stack comprises:
first and second transistors having their emitters coupled to a third transistor;
the first resistor is connected between bases of the first and second transistors,
collector of the first transistor connecting to a negative input of the error amplifier, and collector of the second transistor connecting to a positive input of the error amplifier; and
the third transistor having its base coupled to the first sub-circuit, having its collector coupled to the emitters of the first and second transistors, and having its emitter connected to the ground.
21. The system of claim 20, wherein an ith stack comprises:
(3*(i\u22121)+1)th and (3*(i\u22121)+2)th transistors having their emitters coupled to (3*(i\u22121)+3)th transistor, where i is in a range between 1 and k;
an ith resistor connected between bases of the (3*(i\u22121)+1)th and (3*(i\u22121)+2)th transistors, wherein
base of the (3*(i\u22121)+1)th transistor is connected to the base of (3*(i\u22122)+2)th transistor,
collector of the (3*(i\u22121)+1)th transistor connecting to a negative input of the error amplifier, and collector of the (3*(i\u22121)+2)th transistor connecting to a positive input of the error amplifier;
the (3*(i\u22121)+3)th transistor having its gate coupled to the base of (3*(i\u22122)+3)th transistor, its collector coupled to the emitters of the (3*(i\u22121)+1)th and (3*(i\u22121)+2)th transistors, and its emitter connected to the ground.
22. The system of claim 21, wherein base of the (3*k+2)th transistor in the kth stack is coupled to the output of the error amplifier.
23. The system of claim 22, wherein the base of the (3*k+2)th transistor in the kth stack is coupled to the output of the error amplifier via an added resistor.
24. The system of claim 20, further comprising two additional resistors, where the first additional resistor connects the collector of the first transistor to the power supply and the second additional resistor connects the collector of the second transistor to the power supply.
25. The system of claim 20, further comprising a sub-circuit coupled to the first transistor.
26. The system of claim 25, wherein the sub-circuit comprises one or more serially connected transistors.
27. The system of claim 26, wherein
the one or more serially connected transistors are diode connected;
emitter of each of the one or more serially connected transistors is connected to collector of adjacent serially connected diode connected transistor;
emitter of a last of the one or more serially connected transistors is connected to the ground.
28. The system of claim 26, further comprising an additional resistor serially connected to the first resistor and the one or more serially connected transistors.
29. The system of claim 28, wherein collector of a first of the serially connected transistors is serially connected to the additional resistor.
30. The system of claim 25, wherein the sub-circuit includes a transistor and two resistors, where one of the two resistors is connected between collector and base of the transistor and the other of the two resistors is connected between the base and emitter of the transistor.
31. The system of claim 21, wherein the emitters of the (3*(i\u22121)+1)th and (3*(i\u22121)+2)th transistors in the ith stack are connected to a cross-coupled VBE loop.
32. The system of claim 31, wherein the cross-coupled VBE loop comprises:
a first serially connected transistor and resistor where collector of the first serially connected transistor is connected to the emitter of the (3*(i\u22121)+1)th transistor and emitter of the first serially connected transistor is connected to the first serially connected resistor, which is connected to the collector of the (3*(i\u22121)+3)th transistor;
a second serially connected transistor and resistor where collector of the (3*(i\u22121)+2)th transistor is connected to emitter of the second serially connected transistor and emitter of the second serially connected transistor is connected to the second serially connected resistor, which is connected to the collector of the (3*(i\u22121)+3)th transistor.
33. The system of claim 21, wherein the emitters of the (3*(i\u22121)+1)th and (3*(i\u22121)+2)th transistors in the ith stack are connected to a pair of diode connected devices.
34. The system of claim 33, wherein:
collector of a first of the pair of diode connected transistors is connected to the emitter of the (3*(i\u22121)+1)th transistor and emitter of the first of the pair of diode connected transistors is connected to collector of the (3*(i\u22121)+3)th transistor; and
collector of a second of the pair of diode connected transistors is connected to the emitter of the (3*(i\u22121)+2)th transistor and emitter of the second of the pair of diode connected transistors is connected to collector of the (3*(i\u22121)+3)th transistor.
35. The system of claim 18, wherein input voltage for the k stacked \u0394VBE generator is the same for the first stack.
36. An apparatus, comprising:
a system configured for performing one or more functions based on a voltage reference;
a k-stacked \u0394VBE generator for generating a \u0394VBE corresponding to the voltage reference, wherein k is greater than one and the k-stacked \u0394VBE generator comprises:
an error amplifier configured to generate an output based on an error signal in a closed loop configuration;
a first stack of the \u0394VBE generator for producing a first \u0394VBE, the first stack being coupled to the error amplifier to provide the error signal to the error amplifier and including a first pair of transistors;
second to kth stacks of the \u0394VBE generator for producing a second \u0394VBE to a kth \u0394VBE, respectively, the second to kth stacks being coupled to the first stack and including second to kth pairs of transistors, wherein
the first stack includes a first resistor at which the first \u0394VBE is formed, the first resistor being coupled between bases of transistors in the first pair of transistors,
the second to kth stacks respectively include second to kth resistors at which the second \u0394VBE to the kth \u0394VBE are formed, the second to kth resistors being coupled between bases of transistors in the second to kth pairs of transistors, respectively, and
the \u0394VBE is determined as the sum of first to kth voltages across the first to kth resistors.