WO2009109198A1 - Apparatus for joining or cutting - Google Patents

Apparatus for joining or cutting Download PDF

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Publication number
WO2009109198A1
WO2009109198A1 PCT/EP2008/001714 EP2008001714W WO2009109198A1 WO 2009109198 A1 WO2009109198 A1 WO 2009109198A1 EP 2008001714 W EP2008001714 W EP 2008001714W WO 2009109198 A1 WO2009109198 A1 WO 2009109198A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor
apparatus
tool
gas
apparatus according
Prior art date
Application number
PCT/EP2008/001714
Other languages
French (fr)
Inventor
Helmut Fricke
Original Assignee
Helmut Fricke
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Helmut Fricke filed Critical Helmut Fricke
Priority to PCT/EP2008/001714 priority Critical patent/WO2009109198A1/en
Publication of WO2009109198A1 publication Critical patent/WO2009109198A1/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1613Component parts
    • A61B17/1628Motors; Power supplies
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/14Surgical saws ; Accessories therefor
    • A61B17/142Surgical saws ; Accessories therefor with reciprocating saw blades, e.g. with cutting edges at the distal end of the saw blades
    • A61B17/144Surgical saws ; Accessories therefor with reciprocating saw blades, e.g. with cutting edges at the distal end of the saw blades with cutting edges at the side of the saw blades
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1613Component parts
    • A61B17/1622Drill handpieces
    • A61B17/1624Drive mechanisms therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1613Component parts
    • A61B17/1622Drill handpieces
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00535Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated
    • A61B2017/00544Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated pneumatically
    • A61B2017/00548Gas cartridges therefor

Abstract

The invention relates to an apparatus for joining or cutting, the apparatus, comprising a tool, a motor being arranged for driving the tool, and an energy storage, wherein said energy storage is a gas cartridge (16).

Description

Apparatus for joining or cutting

Field of the invention

The invention relates generally to the field of handheld machines, especially in the field of surgical instrumentation. More particularly, the invention relates to an apparatus for joining or cutting, the apparatus comprising (a) a tool, (b) a motor being arranged for driving the tool, and (c) an energy store.

The apparatus according to the invention can be used advantageously as surgical cutting or joining apparatus, e.g. as a surgical bone saw, surgical bone drill, or Kirschner wire applicator. Today, pneumatic bone saws are used that are powered via a hose by pressurized air from a pressurized air supply. For safety reasons, the air pressure usually does not exceed 1 MPa (14,5 psi). These surgical bone saws suffer from poor handling properties leading to the need to provide additional medical staff for holding the saw during surgical operations.

It is an objective of the present invention to provide an apparatus for joining or cutting that is easier to handle.

The invention solves the problem with an apparatus, in particular a surgical apparatus, for joining or cutting, the apparatus comprising (a) a tool, (b) a motor being arranged for driving the tool, and (c) an energy storage for driving the motor, wherein (d) said energy storage is a gas cartridge. The apparatus may also be called powered joining apparatus or powered cutting apparatus.

According to another aspect, the invention relates to a method of treating a human or animal bone, comprising the steps (a) directing gas from a gas cartridge to a motor, (b) driving the motor with the gas, (c) driving a cutting tool with the motor, and (d) cutting the human or animal bone with the tool. According to yet another aspect, the invention relates to a method of treating a fracture of a human or animal bone, comprising the steps (a) directing gas from a gas cartridge to a motor, (b) driving a motor with a gas, (c) driving a Kirschner wire application tool with the motor, and (d) applying the Kirschner wire to the human or animal bone.

Background of the invention

During a surgical operation, in which for example an artificial hip joint is implanted, the surgeon needs to cut the femoral head to replace by the implant. To cut off the femoral head, the surgeon usually uses a pneumatic saw. The pneumatic saw is connected to a pressurized air supply via a hose. However, these pneumatic bone saws are often not reliable. For example, a bayonet coupling that links the pneumatic bone saw to the hose may leak, giving rise to noise.

Additionally, known pneumatic bone saws are heavy and thus difficult to handle. This is a problem, especially as surgical cutting operations need to be carried out with high precision to insure a successful operation.

Summary of the invention

It is an advantage of the present invention to provide a light weight apparatus for joining or cutting. Especially during a surgical operation, a light weight apparatus is easily handled thus reducing the time necessary to carry out a cut. Another advantage of the present invention is that the apparatus is easy to construct and cheap to manufacture. Therefore, the apparatus may be disposable and may be prepared for single or few time use. Hence, the apparatus according to the invention may also be used in emergency kits or for use in remote areas, where pressurized air is not available. It is yet another advantage of the present invention that the apparatus may be small and does not need a hose. This increases the accuracy of cuts, drilled holes, or pins applied by the apparatus. As the apparatus is small, it is also suitable for small operating fields.

It is an advantage of the present invention that it is not necessary to provide an external source of pressurized air. Such an external source of pressurized air may not be available. Especially in hospitals, pressurized air systems are often contaminated with bacteria, so that this air must not be used for surgical operation devices. As a further advantage, air hoses are no longer needed. Air hoses bear the risk of bursting and have to be checked regularly. They are also inconvenient to use and bear the risk of stumbling for personnel. It is another advantage that the gas cartridge may be a disposable gas cartridge. Disposable gas cartridges are easy to handle and to store, so that the apparatus for joining or cutting has a high reliability and availability.

For the purpose of the following description, the motor is arranged for converting mechanical energy of gas streaming from the gas cartridge to an exhaust into mechanical motion of the tool. In particular, the motor is no internal combustion engine and no electrical motor.

The tool may be a cutting tool or may be a tool for concentrating force, such as a hammer, screwdriver, etc. The tool may also be a guiding tool for guiding and driving e.g. a Kirchner wire, a nail, a pin, a screw etc.

A gas cartridge may be a cartridge that contains a chemical composition or mixture of chemical compositions that is/are gaseous at ambient temperature of 200C and ambient air pressure of 1013 hPa. Alternatively, the gas cartridge contains a chemical composition that may be brought into contact with another chemical composition to react chemically so that such a gas is produced. It is possible, but not necessary that the apparatus for joining or cutting has both functions (joining and cutting). Preferably, the apparatus is a joining apparatus or cutting apparatus alone.

In a preferred embodiment, the tool is a drill or a saw, in particular a bone drill or a bone saw. The bone drill or bone saw may be adapted for cutting human or animal bones. Thus, the apparatus may also be called a surgical apparatus, in particular surgical bone drill or surgical bone saw.

Preferably, the tool is a staple actuator. The apparatus may then be called a pneumatic staple gun. If the staple gun is used as a surgical instrument, the apparatus may also be called a surgical staple gun. In a preferred embodiment, the tool is arranged for accelerating surgical nails. The apparatus may also be arranged to be a nail gun or air palm nailer.

According to another preferred embodiment, the tool is arranged for moving forward a Kirschner wire. A Kirschner wire, K wire, or K pin is a sterilized, sharpened, smooth stainless steal pin used in orthopedics and other types of medical and veterinary surgery. They come in different sizes and are used to hold bone fragments together (pin fixation) or provide an anchor for skeletal traction. Consequently, the apparatus may be called Kirschner wire applicator. It may be used for driving the Kirchner wire into the bone through the skin.

The apparatus may also comprise at least one Kirschner wire and/or a Kirschner wire stack, so that the apparatus is arranged as a ready-to-use Kirschner wire applicator. It can be used advantageously in surgical emergency operations and in remote areas, where pressurized air is unavailable.

The apparatus for joining or cutting may be sterile and be provided with an easily removable protection sheath. For moving forward the Kirschner wire, the tool may be arranged for gripping the Kirschner wire in a retracted position, moving forward to a front position together with the Kirschner wire, release the Kirschner wire, and move back to the retracted position for gripping the Kirschner wire again. So the Kirschner wire is moved forward in a step-wise manner. It is also possible to drive the Kirschner wire by at least one friction wheel.

For use as a nailer, the apparatus preferably comprises a nail stack and a nail feeder for repeatedly feeding nails to a nailing tool.

Preferably, the motor is a vane motor. Vane motors have a small leakage and are able to produce significant torque. As an alternative, the motor may be a piston motor or a turbine that is preferably connected to a gear box, e.g. a harmonic drive. According to another alternative, the motor comprises a diaphragm that may be pressurized from two sides to yield a reciprocating movement.

It is preferred that the motor is arranged for oscillating the tool around a longitudinal axis. This is in particular advantageous, if the apparatus is a Kirschner wire applicator. The oscillating movement around a longitudinal axis is similar to the movement of an electrical tooth brush and makes it possible to insert the Kirschner wire easily into bone tissue. More preferably, the motor is arranged for oscillation the tool around the longitudinal axis and to move it forward along the longitudinal axis at the same time.

Alternatively, the motor is arranged for reciprocating the tool. For example, the tool may be a saw and the motor is arranged for moving the saw in a reciprocating manner. The motor may be arranged for reciprocating the saw in a direction substantially parallel to the longitudinal axis. In this case, the apparatus may also be called jigsaw. However, the motor may also be arranged for reciprocating the saw in a direction substantially perpendicular to the longitudinal axis. Preferably, the gas cartridge is a CO2 cartridge containing liquid CO2. It is an advantage that carbon dioxide is liquid at room temperature of 200C, if the pressure is above 5,8 MPa. As a liquid, carbon dioxide has a high density so that even small carbon dioxide cartridge can store a significant amount of carbon dioxide. Further, CO2 is non-toxic and does not burn. However, it is possible to use pressurized air, pressurized nitrogen, pressurized nitrous gases, or a mixture of two or three of said gases.

Preferably, the gas cartridge has an internal pressure of more than 4 MPa, in particular more than 6 MPa. The high pressure yields a high energy density in the gas cartridge. For use in surgical situations, it is preferred that the gas cartridge contains sterile CO2. For the sake of easy handling, the gas cartridge preferably contains less than 1000 g of gas. In particular, the gas cartridge contains less than 100 g of gas, e.g. 12 g to 50 g of gas. These kinds of gas cartridges are small and easy to handle, but contain a sufficient amount of gas for most applications of the apparatus for joining or cutting.

It is possible to provide the gas cartridge so that it cannot be removed from the apparatus. However, it is preferred that the apparatus comprises a gas cartridge retainer for changeably retaining the gas cartridge. These kinds of gas cartridge retainers are known from soda water dispensers or soda water makers.

In the following, preferred embodiments are described with respect to the accompanying drawings, in which

Figure 1 is a schematic cross view of an apparatus for cutting according to the present invention,

Figure 2 is a detail of another embodiment of an apparatus according to the invention, and

Figure 3 is a detail of a third embodiment of the present invention.

Figure 4 is a detail of a fourth embodiment of the present invention and

Figure 5 is a detail of a fifth embodiment of the present invention.

Figure 1 depicts an apparatus for joining in form of a Kirschner wire applicator 10 comprising a tool 12 in form of a chuck, a motor 14 in form of a pneumatic motor, and an energy storage or energy store in form of a gas cartridge 16. Gas cartridge 16 is received in a gas cartridge retainer 18 that comprises a recess 20 in a main body 22 of the Kirschner wire applicator 10.

Recess 20 has an inner diameter that is a small amount larger than an outer diameter of gas cartridge 16. Main body 22 comprises a gas cartridge chamber screw 24 for releasably closing recess 20 in gas tight manner. Gas cartridge chamber screw 24 comprises a safety screw 26 for venting recess 20 in a controlled way to allow a safe change of gas cartridge 16.

Gas cartridge 16 has an outlet end 28, which it abuts a sealing 30. Sealing 30 is arranged between the outlet end 28 and a piercing plate 32 for piercing a sealing element (not shown) of gas cartridge 16, thus contacting an interior of gas cartridge 16 to a first duct 34 in main body 22. First duct 34 can be brought into gas communication with a second duct 36 via a valve 38. Valve 38 comprises a push button 40 to push valve 38 open against a biasing force of a spring 42.

When the push bottom 40 is actuated, e.g. using a finger tip, carbon dioxide 44 flows from the interior of gas cartridge 16 through first duct 34 and second duct 36 to motor 14, which in the present case is a vane motor. The carbon dioxide 44 drives motor 14, so that it turns around a longitudinal axis L with a rotational speed ω. Motor 14 may comprise a rotational speed controlling device (not shown) that limits the rotational speed ω to a pre-determined maximum rotational speed ωmax .

After driving motor 14, the carbon dioxide 44 streams via an exhaust duct 46 in main body 22 to a decompression chamber 48 and leaves main body 22 through an exhaust opening 50 after passing a silencer 52. Silencer 52 may consist of nonwoven material.

Vane motor 14 comprises a plurality of vanes 45.1 , 45.2 that are attached to and extend radially from a shaft 54. Vanes 45 are received in a motor chamber or cylinder block 55 in a cylinder block with a narrow clearance between each vane 45 and the cylinder block 55 to avoid leaking. Vanes 45.1 , 45.2, ... may also have a sealing element. Shaft 54 is supported in two rotational bearings 56.1 , 56.2 and a thrust bearing 56.3. Bearings 56 may be ball bearings or friction bearings.

Shaft 54 comprises chuck 12 to which a Kirschner wire 58 is releasably mounted. During operation, a surgeon removes Kirschner wire applicator 10 that has been sterilized from a gas-tight sheath protecting it against gems. The surgeon then places a tip 60 of Kirschner wire 58, which may be pointed or may comprise a thread, on a human or animal bone or neighboring tissue. The surgeon than pushes push bottom 40 so that Kirschner wire 58 is rotated about longitudinal axis L. The surgeon then inserts Kirschner wire 58 into the bone fragments thus linking the bone fragments and stabilizing them. Kirschner wire 58 has a diameter between 1 ,2 mm and 3,0 mm and a length between 200 mm and 300 mm. Main body 22 may be made from die cast metal, such as aluminum, magnesium, or alloys of one or both of those. Main body 22 may also be made from injection-molded plastics.

Motor 14 may also comprise a metal casing or cylinder block 55, in which vanes 45 are arranged. It is possible to injection-mold main body 22 around this cylinder block 55. This yields a long-living motor 14 at low costs. Shaft 54 and vanes 45 may be made from die cast metal as well.

In an alternative embodiment of the present invention, the apparatus for cutting comprises a chuck that is adapted for clamping a drill (not shown).

Figure 2 shows an alternative embodiment of an apparatus for cutting according to the invention in form in of a surgical jigsaw 62. Jigsaw 62 comprises all elements described above, except tool 12 comprising an excentric 64 coupled to shaft 54. Excentric 64 has a pin 66 cooperating with the recess 68 in a blade mounting 70 that is coupled to a saw blade 72.

When push bottom 40 (see Figure 1 ) is pushed, motor 14 rotates shaft 54 and saw blade 72 is moved in reciprocating manner. Releasing push botton 40 stops the movement of saw blade 72.

Figure 3 depicts a detail of a sawing apparatus 74, which is an apparatus for cutting according to the invention. The sawing apparatus 74 has all features relating to the drive mechanism as described for jigsaw 62 (Figure 2). Sawing apparatus 74 however has a saw blade 72, which extends along longitudinal axis L. Pin 66 moves in a linear slit 73 provided in blade mounting 70. Blade mounting 70 is linked to main body 22 (figure 1 ) via a linear guide (not shown). Figure 4 shows a detail of another alternative embodiment of the apparatus according to the invention having the features as described in figure 1 , but in which motor 14 is a piston engine comprising one, two, or more pistons. In the shown embodiment, motor 14 has one piston 76 slidably arranged in a cylinder 77 in a cylinder block 78.

Motor 14 also has an alternating valve 80 for alternatingly providing one of two piston chambers 82.1 , 82.2 with pressurized carbon dioxide 44, so that the piston 76 reciprocates between a retracted position and a front position. In the retracted position, shaft 54 is close to a first end (left end in figure 4) of the cylinder block 78 and in the front position the shaft 54 is close to an opposite end.

Saw blade 72 is connected to piston 76 for reciprocating along longitudinal axis L, i.e. reciprocating piston 76 drives the saw blade 72 so that is performs a sawing movement.

Figure 5 schematically depicts details of motor 14 according to a preferred embodiment, which has the features of the embodiment according to figure 4, unless described differently in the following. Motor 14 comprises a passive control valve 84. In the embodiment according to figure 5, the passive control valve 84 is a multi-way valve in form of a 5/2 way valve. To ease understanding, passive control valve 84 is drawn to a larger scale with respect to cylinder 77.

The 5/2 way valve has an inlet P connected to second duct 36 (see figure 1 ) and an exhaust outlet R connected to exhaust duct 46. The 5/2 way valve also has a first pressure outlet A, a second pressure outlet B, a first control port Y, and a second control port Z.

When push button 40 is pushed, carbon dioxide streams into inlet P and out pressure outlet B to a first air supply port 86 close to a first end face 88 of cylinder 77 (see figure 4) and pushes piston 76 towards a second end face 90 of cylinder 77 opposite first end face 88. This movement pushes gas thru a first ventilation outlet Y' of cylinder 77 into first control port Y of control valve 84, thus moving a control valve shaft 92 to the left in Figure 5.

The movement of control valve shaft 92 continues until a first control piston 94.1 that is mounted to control valve shaft 92 blocks pressure outlet B. Simultaneously, a second control piston 94.2 allows carbon dioxide 44 to flow from inlet P to first pressure outlet A. First pressure outlet A is connected to a second supply port 96 opposite first supply port 86 into cylinder 77. Thus, carbon dioxide 44 pushes piston 76 towards first end face 88.

Due to this movement of piston 76, gas is pressed into a second ventilation outlet Z' communicating with second control port Z. Similar to the mechanism described above, gas entering second control port Z pushes control valve shaft 92 back into the initial position, so that the course of action described above starts again. It is preferred to choose a diameter of cylinder 77 less than 6 mm, in particular less than 3 mm to reduce the amount of carbon dioxide per second that is necessary to run the motor 14.

A method according to the invention is now described with reference to a surgical operation to implant an artificial knee joint. First, the head of the damaged knee is cut off using a sawing apparatus 74 as described above, so that a cut area is build. Then, a fixing block is placed on the cut area and fixed to the bone i.e. the thigh. This is done by applying fixing pins applied by a joining apparatus according to the invention.

The joining apparatus has a tool 12 that is a staple actuator or pin driving tool or hammer head arranged for driving the fixing pins a pre-determined depth into the bone. Further, the joining apparatus comprises a pin magazine comprising a plurality of medical pins and a pin feeder for taking pins from the pin magazine and mounting it to the pin driving tool. Thus, the joining apparatus reloads after each shot. Then, a sawing jig is mounted to the fixing block and a plurality of cuts is carried out, so that the end of the thigh has a prismatic shape. If necessary, the fixing pins are replaced. After removing the fixing block, an artificial joint head is firmly mounted to the cut bone.

Reference numerals

10 Kirschner wire applicator

12 tool

14 motor

16 gas cartridge

18 gas cartridge retainer

20 recess

22 main body

24 gas cartridge chamber screw

26 safety screw

28 outlet end

30 sealing

32 piercing plate

34 first duct

36 second duct

38 valve

40 push button

42 spring

44 carbon dioxide

45 vanes

46 exhaust duct

48 decompression chamber

50 exhaust opening

52 silencer

54 shaft

55 cylinder block

56 bearing

58 Kirschner wire

60 tip 2 jigsaw 4 excentric 66 pin

68 recess

70 blade mounting

72 saw blade

73 linear slit

74 sawing apparatus

76 piston

77 cylinder

78 cylinder block

80 alternating valve

82 piston chambers

84 passive control valve

86 first supply port

88 first end face

90 second end face

92 control valve shaft

94 control piston

96 second supply port

L longitudinal axis ω rotational speed

Claims

I claim:
1. An apparatus for joining or cutting, the apparatus (10, 62, 74) comprising
(a) a tool (12),
(b) a motor (14) being arranged for driving the tool (12), and
(c) an energy storage (16),
(d) said energy storage being a gas cartridge (16).
2. The apparatus according to claim 0, the tool comprising a drill or a saw (72), in particular a bone drill or a bone saw.
3. The apparatus according to claim 0, the tool comprising a staple actuator.
4. The apparatus according to claim 0, the tool (12) being arranged for moving forward a Kirschner wire (58).
5. The apparatus according to claim 4, the apparatus comprising a Kirschner wire (58).
6. The apparatus according to any preceding claim, the motor comprising plurality of vanes (45).
7. The apparatus according to any preceding claim, the motor (14) being arranged for oscillating the tool (12) around a longitudinal axis (L).
8. The apparatus according to any preceding claim, the motor (14) being arranged for reciprocating the tool (12).
9. The apparatus according to any preceding claim, the gas cartridge (16) containing liquid gas, in particular containing liquid CO2.
10. The apparatus according to any preceding claim, the apparatus comprising a lockable gas cartridge retainer (19) for changeably retaining the gas cartridge (16).
11. The apparatus according to any preceding claim, the apparatus comprising a passive control valve (84), in particular a 5/2 way valve.
12. A method of treating a human or animal bone, comprising the steps
(a) directing gas (44) from a gas cartridge (16) to a motor (14),
(b) driving the motor (14) with the gas (44),
(c) driving a tool (12) with the motor (14), and
(d) cutting the human or animal bone with the tool (12).
13. The method according to claim 14, wherein the tool is a drill or a saw (72).
14. A method of treating a fracture of a human or animal bone, comprising the steps
(a) directing gas (44) from a gas cartridge (16) to a motor (14),
(b) driving the motor (14) with the gas (44),
(c) driving a Kirschner wire application tool with the motor (14), and
(d) applying the Kirschner wire (58) to the human or animal bone.
PCT/EP2008/001714 2008-03-04 2008-03-04 Apparatus for joining or cutting WO2009109198A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/001714 WO2009109198A1 (en) 2008-03-04 2008-03-04 Apparatus for joining or cutting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/001714 WO2009109198A1 (en) 2008-03-04 2008-03-04 Apparatus for joining or cutting

Publications (1)

Publication Number Publication Date
WO2009109198A1 true WO2009109198A1 (en) 2009-09-11

Family

ID=39917156

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/001714 WO2009109198A1 (en) 2008-03-04 2008-03-04 Apparatus for joining or cutting

Country Status (1)

Country Link
WO (1) WO2009109198A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2520235A1 (en) * 2011-05-06 2012-11-07 Aesculap Ag Surgical hand-held tool
WO2014023575A1 (en) * 2012-08-08 2014-02-13 Aesculap Ag Pneumatically controllable surgical instrument
US9265506B2 (en) 2010-03-12 2016-02-23 Aesculap Ag Surgical Instrument
WO2016043807A1 (en) * 2014-09-16 2016-03-24 A.M. Surgical, Inc. Device for driving fixation elements into bone and method of use thereof
CN108453303A (en) * 2018-02-28 2018-08-28 重庆广福科技有限公司 Automobile pipe cutting device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5005754A (en) * 1990-04-04 1991-04-09 Ethicon, Inc. Bladder and mandrel for use with surgical stapler
DE20318275U1 (en) * 2003-11-26 2004-02-12 Aesculap Ag & Co. Kg Compressed gas driven surgical instrument has connection for integral gas cartridge via pressure regulator
US20060089623A1 (en) * 2004-10-21 2006-04-27 Medtronic, Inc. Surgical instrument with wear-resistant housing and method of operating same
EP1859749A2 (en) * 2006-05-27 2007-11-28 AESCULAP AG & Co. KG Surgical instrument actuated by gas pressure
EP1884203A2 (en) * 2006-08-02 2008-02-06 Ethicon Endo-Surgery, Inc. Pneumatically powered surgical cutting and fastening instrument wiht improved volume storage
WO2008040537A1 (en) * 2006-10-06 2008-04-10 Helmut Fricke Lockable joint

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5005754A (en) * 1990-04-04 1991-04-09 Ethicon, Inc. Bladder and mandrel for use with surgical stapler
DE20318275U1 (en) * 2003-11-26 2004-02-12 Aesculap Ag & Co. Kg Compressed gas driven surgical instrument has connection for integral gas cartridge via pressure regulator
US20060089623A1 (en) * 2004-10-21 2006-04-27 Medtronic, Inc. Surgical instrument with wear-resistant housing and method of operating same
EP1859749A2 (en) * 2006-05-27 2007-11-28 AESCULAP AG & Co. KG Surgical instrument actuated by gas pressure
EP1884203A2 (en) * 2006-08-02 2008-02-06 Ethicon Endo-Surgery, Inc. Pneumatically powered surgical cutting and fastening instrument wiht improved volume storage
WO2008040537A1 (en) * 2006-10-06 2008-04-10 Helmut Fricke Lockable joint

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9265506B2 (en) 2010-03-12 2016-02-23 Aesculap Ag Surgical Instrument
EP2520235A1 (en) * 2011-05-06 2012-11-07 Aesculap Ag Surgical hand-held tool
WO2014023575A1 (en) * 2012-08-08 2014-02-13 Aesculap Ag Pneumatically controllable surgical instrument
JP2015524324A (en) * 2012-08-08 2015-08-24 アエスキュラップ アーゲー The surgical instrument that can be pneumatically actuated
US9566077B2 (en) 2012-08-08 2017-02-14 Aesculap Ag Pneumatically actuatable surgical instrument
WO2016043807A1 (en) * 2014-09-16 2016-03-24 A.M. Surgical, Inc. Device for driving fixation elements into bone and method of use thereof
US9867647B2 (en) 2014-09-16 2018-01-16 A.M. Surgical, Inc. Device for driving fixation elements into bone and method of use thereof
CN108453303A (en) * 2018-02-28 2018-08-28 重庆广福科技有限公司 Automobile pipe cutting device
CN108453303B (en) * 2018-02-28 2019-05-24 重庆广福科技有限公司 Automobile pipe cutter device

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