All The Claims

1-12. (canceled)
13. A method of forming an organic polymeric particle, comprising:
forming a core of an organic hydrophilic polymer with monomers that contains an acid group, a latent acid group, or a combination thereof;
forming a shell that comprises an organic polymer with monomers that contains an acid group, a latent acid group, or a combination thereof to encapsulate the core, where the shell has an initial size; expanding the core to form a hollow porous structure from the shell, where the hollow porous structure has an expanded size larger than an initial size of the shell; and
hydrolyzing the acid group, the latent acid group or the combination thereof of the hollow porous structure and the organic hydrophilic polymer to give the organic polymeric particle a void volume fraction of 40 percent to 85 percent.
14. The method of claim 13, where hydrolyzing the acid groups, latent acid groups or the combination thereof of the hollow porous structure forms pores in the hollow porous structure.
15. The method of claim 14, including adjusting a size of the pores in the hollow porous structure by adjusting an amount of the acid group, the latent acid group, or the combination thereof used in forming the organic polymer of the shell.
16. The method of claim 1, including adjusting the organic polymeric particle void volume fraction by adjusting an amount of the organic hydrophilic polymer used to form the core.
17. The method of claim 1, including crosslinking the organic hydrophilic polymer of the core.
18. The method of claim 1, where forming the shell includes forming the shell from 5 to 10 weight parts of an acrylate monomer and 95 to 90 weight parts of a styrene monomer.
19. The method of claim 1, where forming the core includes forming the core from 5 to 95 weight parts of monomers that contain an acid group, a latent acid group, or a combination thereof.
20. An organic polymeric particle comprising:
a. a core including a polymer including units deriving from the polymerization of acrylate monomer; and
b. a shell surrounding the core, where the shell includes a polymer having units deriving from the polymerization of styrene monomer and acrylate monomer selected from methyl acrylate, butyl acrylate, and combinations thereof; where the shell includes polymer having from 70 to 98 weight units deriving from the polymerization of styrene monomer, and from 2 to 30 weight units deriving from the polymerization of acrylate monomer.
21. The particle of claim 20, where the organic polymeric particle is a latex particle.
22. The particle of claim 20, where the core has a particle size of from 0.07 to 0.5 micron.
23. The particle of claim 20, where the core includes a polymer having units deriving from methacrylate monomer and acrylate monomer.
24. The particle of claim 23, where the acrylate monomer is methyl acrylate, and where the methacrylate monomer is methyl methacrylate.
25. The particle of claim 20, where the shell includes polymer having from 90 to 95 weight units deriving from the polymerization of styrene monomer, and from 5 to 10 weight units deriving from the polymerization of acrylate monomer.
26. The particle of claim 20, where the shell includes a polymer having units deriving from the polymerization of styrene monomer, acrylate monomer, and acid monomer.
27. A method for making a hollow porous particle, the method comprising the steps of:
a. providing an organic polymeric particle including a core including a polymer including units deriving from the polymerization of acrylate monomer; and a shell surrounding the core, where the shell includes a polymer having units deriving from the polymerization of styrene monomer and acrylate monomer selected from methyl acrylate, butyl acrylate, and combinations thereof; where the shell includes polymer having from 70 to 98 weight units deriving from the polymerization of styrene monomer, and from 2 to 30 weight units deriving from the polymerization of acrylate monomer; and
b. subjecting the organic polymeric particle to conditions that will hydrolyze the units deriving from the polymerization of acrylate monomer, to thereby provide a hollow porous particle.
28. The method of claim 27, where hollow porous particle has a void volume fraction of from 40 to 85 percent.
29. The method of claim 27, where the hollow porous particle has a pore surface area greater than 1 percent of the total theoretical exterior surface.

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 hand-held drilling apparatus comprising:
a carriage mounting plate having at least one guide rail, a drill carriage slidably mounted on the at least one guide rail, a means for driving the drill carriage in forward and reverse directions along the guide rail, and a drill motor mounted on the drill carriage for rotating a drill bit having an axis of rotation oriented parallel to the guide rail;
a stationary plate guide mounted on the carriage mounting plate, a rear plate guide attached perpendicularly to the stationary plate guide, a movable plate guide slidably mounted to the rear plate guide, means to move the movable plate guide relative to the stationary plate guide in order to grip a workpiece between the plate guides, means to lock the movable plate guide in position when the workpiece is gripped, the stationary and movable plate guides being oriented perpendicularly to the axis of the drill bit, and a depth adjustment knob extending through the rear plate guide and perpendicularly to the axis of the drill bit in order to push against an edge of the workpiece to adjust the position of the axis of rotation of the drill bit relative to the edge of the workpiece;
two handgrips mounted on the carriage mounting plate adjacent the stationary and movable plate guides such that the hand grips are oriented generally perpendicularly to the axis of rotation of the drill bit and generally parallel to the stationary and movable plate guides, wherein the operator will be oriented orthogonally relative to the axis of rotation of the drill bit;
a laser distance sensor mounted on the carriage mounting plate for measuring the distance between the carriage mounting plate and a reference surface generally parallel to the axis of the drill bit, such that the axis of the drill bit may be located at a desired distance from the reference surface when multiple holes are drilled on spaced workpieces.
2. The hand-held drilling apparatus according to claim 1, further comprising:
a shoulder strap mount located at each end of the carriage mounting plate for attachment of a strap that may be looped over the operator’s shoulder.
3. The hand-held drilling apparatus according to claim 1, further comprising:
means for measuring the travel distance of the drill bit within the workpiece.
4. The hand-held drilling apparatus according to claim 3, further comprising:
means for setting the desired travel distance of the drill bit within the workpiece.
5. The hand-held drilling apparatus according to claim 3, further comprising:
workpiece detecting sensors, said sensors requiring activation prior to commencement of the drilling cycle.

1. A biological signal detecting apparatus comprising:
a band pass filter (BPF) to which a biological signal is input via a lead directly connected to a subcutaneous tissue that emits the biological signal including a predetermined signal of a first frequency and which outputs a filtered biological signal by filtering a signal (biological event signal) of a predetermined frequency including the first frequency; and
a peak detecting means to which at least the filtered biological signal is input and which detects a peak location of the biological event signal by processing the filtered biological signal,
wherein the BPF includes a first order high-pass filter (HPF) which filters a frequency higher than a second frequency and a first order low-pass filter (LPF) which filters a frequency lower than a third frequency,
wherein the HPF and the LPF are connected in series between the lead and the peak detecting means, and
wherein a difference between the second frequency and the third frequency is less than or equal to 10 Hz.
2. The biological signal detecting apparatus according to claim 1,
wherein the second frequency is less than the first frequency and greater than or equal to 6 Hz, and
wherein the third frequency is greater than the first frequency and less than or equal to 25 Hz.
3. The biological signal detecting apparatus according to claim 1, further comprising:
a gain amplifier which is connected between the HPF and the LPF and amplifies a signal gain.
4. The biological signal detecting apparatus according to claim 3,
wherein the gain amplifier is a variable gain amplifier, and
wherein a gain of the variable gain amplifier is varied to an extent to which a signal component decayed by the BPF is compensated for.
5. The biological signal detecting apparatus according to claim 1, wherein both the HPF and the LPF are configured in a switched capacitor type.
6. An implantable medical device comprising:
the biological signal detecting apparatus according to claim
a diagnosis means; and
a therapy signal generating means,
wherein the biological signal is an IFCG signal,
wherein the tissue is a heart,
wherein the biological event signal is an R wave,
wherein the lead is connected to at least one of a right ventricle and a left ventricle of the heart,
wherein the diagnosis means receives an input of the peak location and outputs a diagnosis result corresponding to information of the peak location; and
wherein the therapy signal generating means receives an input of the diagnosis result and applies a therapy signal corresponding to the diagnosis result to an atrium for which therapy is necessary via the lead.
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 carry bag comprising:
a compartment for receiving items;
a first panel attached to or formed integrally with the carry bag alongside the compartment;
a second substantially rectangular panel located externally of the compartment and supported by a hinge to pivot with respect to the first panel;
one or more straps attached at or near the periphery of the second panel and extending from a position remote from the hinge to a position proximal of the hinge for securing the carry bag against the torso of a user;
the carry bag being adaptable between a first configuration in which the first and second panels are mutually parallel, and a second configuration in which the first and second panels are mutually non-parallel and in which the first panel forms a support surface extending away from the user’s torso above the compartment, and wherein in both said configurations, the second panel can be retained substantially flat against the torso of a user by the straps.
2. The carry bag of claim 1, wherein said straps comprise a pair of shoulder straps extending from the second panel at an edge remote from the hinge.
3. The carry bag of claim 2, wherein said straps further comprise a waist strap extending from the second panel at an edge proximal to the hinge.
4. The carry bag of claim 1, further comprising an extension panel attached to the first panel and adapted to extend away from the first panel to provide an auxiliary surface area contiguous with said support surface.
5. The carry bag of claim 4, wherein the auxiliary panel slides with respect to the first panel and the first panel comprises slots and the auxiliary panel comprises pins which fit into said slots.
6. The carry bag of claim 1, further comprising a zipper extending partially about the periphery of the first and second panels and which when closed maintains the said first configuration of the carry bag.
7. The carry bag of claim 1, wherein the first panel is rigid and wherein the hinge is formed integrally with the first panel.
8. The carry bag of claim 7, wherein the second panel is rigid and wherein the hinge is also formed integrally with the second panel.
9. The carry bag of claim 7, wherein the hinge comprises attachment fingers adapted to be attached to the carry bag at the second panel.
10. The carry bag of claim 7, wherein the hinge comprises a U-channel adapted to be attached to the carry bag adjacent to the second panel.
11. The carry bag of claim 1, wherein the hinge comprises a pair of abutment flanges which abut one another to limit the maximum angle of pivotal movement between the first and second panels.
12. The carry bag of claim 11, wherein one of the abutment flanges comprises an array of apertures\u2014each selectively adapted to receive a buffer against which the other flange bears to thereby adjust said maximum angle.