CN108918009B - Device and method for measuring pulling force and closing force of endoscopic stapler - Google Patents
Device and method for measuring pulling force and closing force of endoscopic stapler Download PDFInfo
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- CN108918009B CN108918009B CN201810930190.5A CN201810930190A CN108918009B CN 108918009 B CN108918009 B CN 108918009B CN 201810930190 A CN201810930190 A CN 201810930190A CN 108918009 B CN108918009 B CN 108918009B
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- 238000012545 processing Methods 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 5
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- 229910052719 titanium Inorganic materials 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B17/07207—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously the staples being applied sequentially
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The invention provides a device and a method for measuring the pulling force and closing force of an endoscope anastomat. The invention has the characteristics of simple structure and convenient operation, and can clamp the endoscope anastomat and automatically measure the trigger force and the closing force.
Description
Technical Field
The invention relates to a device for measuring the pulling force and the closing force of an endoscopic stapler, and also relates to a method for measuring the pulling force and the closing force of the endoscopic stapler, belonging to the field of medical appliances.
Background
The anastomat is a device used in medicine to replace manual suturing, and the main working principle is to separate or anastomose tissues by using titanium nails, which is similar to a stapler. According to the application scope, the utility model can be mainly divided into a skin anastomat, a digestive tract (esophagus, stomach, etc.) circular anastomat, a rectum anastomat, a circular hemorrhoid anastomat, a circumcision anastomat, a blood vessel anastomat, a hernia anastomat, a lung cutting suture instrument, etc.
The trigger force and the chuck closing force of the endoscopic stapler during firing have important influences on the stability, comfort and application range of the stapler in operation of doctors. Currently, there are no relevant standards in medical device product registration.
The invention accurately measures the trigger force and the chuck closing force of the endoscopic stapler in the firing state, and is expected to play a certain role in future research and development, production and quality inspection of endoscopic stapler products and formulation of product registration standards.
Disclosure of Invention
The invention aims to provide a device and a method for measuring the triggering force and the clamping head closing force of an endoscopic stapler, which are used for solving the problem that the triggering force and the clamping head closing force of the traditional endoscopic stapler cannot be measured, and are suitable for measuring the triggering force and the clamping head closing force of the endoscopic stapler in a triggering state.
The invention adopts the following technical scheme:
a device for measuring the cocking force and closing force of an endoscopic stapler, comprising:
the bearing part, the clamping part, the impact force measuring part, the closing force measuring part, the data processing and displaying part and the L-shaped plate,
wherein the L-shaped plate comprises: the device comprises a vertical plate and a horizontal plate, wherein a fan-shaped hole is formed in the vertical plate;
the bearing part includes: the front support block, the rear support block, the support nail, the positioning pin and the telescopic pin are all arranged on one side of the L-shaped plate vertical plate, the front support block is supported on the side surface of the rotary head of the anastomat, the rear support block is supported on the side surface of the body of the anastomat, the support nail is supported on the side surface of the handle of the anastomat, the positioning pin is positioned below the rotary head of the anastomat, and the telescopic pin is arranged at a transition circular arc of the rear side of the intersection of the upper part of the handle of the anastomat and the body;
the clamping portion includes: the compressing plate comprises a top plate and a side plate, the top plate is fixedly arranged on a vertical plate of the L-shaped plate, the anastomat is accommodated between the side plate and the vertical plate, the compressing screw is arranged on the side plate, the front end of the compressing screw is propped against the side surface of the anastomat, and clamping force is applied to the anastomat;
a cocking force measurement section comprising: the device comprises a first screw nut mechanism, a swing rod, a sliding block, a connecting shaft, a small shaft and a measuring head, wherein the first screw nut mechanism is arranged on the other side of an L-shaped plate vertical plate, the first screw nut mechanism is provided with a first nut, the swing rod is arranged in a fan-shaped hole, the upper end of the swing rod is rotationally connected with the L-shaped plate, a roller is arranged at the lower end of the swing rod, the roller rolls in an arc track of the fan-shaped hole, one end of the connecting shaft is fixedly arranged on the first nut, the other end of the connecting shaft is inserted into a kidney-shaped hole at the lower end of the swing rod, the sliding block is sleeved on the swing rod and freely slides on the swing rod, the measuring head is connected with the sliding block on the swing rod through the small shaft, and a containing hole is formed in the lower part of the measuring head, and a firing trigger of the anastomat is inserted into the containing hole;
a closing force measuring section corresponding to a chuck position of the stapler, the closing force measuring section including: the test piece plate is arranged on the support table, and moves up and down along a linear track under the drive of the second screw nut mechanism;
and the data processing and displaying part is used for collecting, processing and displaying the trigger force and closing force input signals.
Further, the device for measuring the pulling force and the closing force of the endoscopic stapler has the following characteristics: the measuring head is provided with a set screw, the set screw enters from the side wall of the accommodating hole, and the front end of the set screw presses the firing trigger tightly.
Further, the device for measuring the pulling force and the closing force of the endoscopic stapler has the following characteristics: the measuring head comprises a mandrel, a shaft sleeve, a force sensor, a spring, a connecting seat, a fixing screw and a set screw, wherein one end of the mandrel is provided with a shaft hole, the shaft hole is sleeved on the small shaft, and the other end of the mandrel is arranged in the shaft sleeve. The connecting seat one end has connecting seat groove and boss, and the other end has the accommodation hole, and the connecting seat groove encircles around the boss, and the spring setting is in the axle sleeve to the cover is on the other end of dabber, and spring one end supports the convex shoulder lower extreme at the dabber, and the other end supports in the connecting seat groove, and the convex shoulder of spindle and the recess in the axle sleeve cooperate, and the dabber slides along axle sleeve axis direction, axle sleeve and connecting seat lock to through set screw interconnect, be equipped with force transducer between the lower extreme of dabber and the boss of connecting seat, the connecting seat lower part is provided with the accommodation hole.
Further, the device for measuring the pulling force and the closing force of the endoscopic stapler has the following characteristics: the test piece plate includes: the experimental device comprises a U-shaped plate, experimental tissues, a film sensor, a pressing plate and a compression screw, wherein the U-shaped plate comprises an upper plate and a lower plate, the corresponding positions of the upper plate and the lower plate are grooved, the shape of the groove is consistent with the shape of the outer edge of a chuck of the anastomat, the experimental tissues are arranged on the lower plate, the pressing plate is arranged on the experimental tissues, the compression screw enters from the upper plate of the U-shaped plate, the front end of the compression screw is compressed with the pressing plate, and the film sensor is adhered to the upper surface of the experimental tissues.
Further, the device for measuring the pulling force and the closing force of the endoscopic stapler has the following characteristics: the telescopic pin assembly comprises a telescopic pin body, a double-end stud, a retainer ring and a gland nut, wherein the telescopic pin body and the double-end stud are arranged side by side, the retainer ring is fixed on an L-shaped plate by the double-end stud and the gland nut, a clamping groove is formed in the tail of the telescopic pin body and is clamped with the retainer ring, an arc groove is formed in the outer edge of the retainer ring, and when the arc groove rotates to one side of the telescopic pin body, the telescopic pin body can be separated from the arc groove.
The invention also provides a method for measuring the trigger force and the closing force of the endoscopic stapler, which is characterized by comprising the following steps:
step one: inserting a firing trigger of the anastomat into an accommodating hole of the measuring head, and tightening a fixing screw;
step two, loosening a compression nut on a baffle ring of the telescopic pin, rotating a retainer ring to enable an arc groove on the baffle ring to be aligned with the telescopic pin, extracting the telescopic pin from a vertical plate, putting a tested anastomat into a gap between the compression plate and the vertical plate, enabling one side surface of the tested anastomat to abut against a supporting part, resetting the telescopic pin, rotating the retainer ring to enable two side surfaces of the retainer ring to be clamped in the annular groove of the telescopic pin, tightening the retainer ring fastening nut to fix the telescopic pin, enabling a rotating head of the anastomat to be in contact with a positioning pin, enabling a transitional arc part on the intersecting rear side of an anastomat handle and a machine body to be in contact with the telescopic pin,
step three, the small shaft on the slide block is inserted into the shaft hole at the upper end of the measuring head mandrel by adjusting the positions of the swing rod and the slide block,
step four, pulling a spanner on the compression screw rod, applying a compression force to one side of the anastomat, compressing the anastomat on the bearing part, and completing positioning and clamping of the anastomat;
step five, adjusting the height of the test piece plate bracket by controlling the movement of the second screw nut mechanism so that the upper surface of the lower plate of the test piece plate is flush with the working lower surface of the chuck of the anastomat; manually adjusting the position of the test piece plate on the plane of the bracket to align the slotted part of the test piece plate with the outer contour of the chuck of the anastomat;
step six, setting the rotating speed of a screw in the first screw nut mechanism through a data processing and displaying module, starting a measuring device, enabling the firing force to be uniformly loaded on a trigger of the anastomat, displaying the firing trigger force in real time through a display, closing and locking the chuck of the anastomat when the trigger moves to a set position, and displaying the firing force and closing force values of three test points on the chuck of the anastomat through the display.
Advantageous effects of the invention
The invention has the characteristics of simple structure and convenient operation, and can clamp the endoscope anastomat and automatically measure the trigger force and the closing force.
When the anastomat is clamped, the telescopic pin is pulled out from the back of the L-shaped plate, the anastomat is inserted into a gap between the vertical plate and the compression plate and is closely contacted with the supporting part, then the telescopic pin is pushed in and blocked at the joint transition arc of the handle and the machine body of the anastomat, the positioning of the anastomat is finished, and the compression screw is screwed to finish the clamping of the anastomat.
The test piece plate is arranged on the supporting table, and the supporting table is connected with the screw nut mechanism, so that the height adjustment of the test piece plate can be realized. Meanwhile, the test piece plate is placed on the supporting table, and the position of the test piece plate in a certain height plane can be manually adjusted. Accurate positioning of the test piece plate can be achieved through slotting of the upper surface of the test piece plate, wherein the slotting is consistent with the outer contour of the clamping head.
When the anastomat is triggered, trigger force can be applied through a screw nut mechanism, the swing rod swings around the fixed pin through the connecting shaft arranged in the waist-shaped hole of the swing rod, and the trigger force is applied to the trigger through the sliding block arranged on the swing rod, the small shaft fixed on the sliding block and the measuring head sleeved on the small shaft in an empty mode. The speed of the screw nut mechanism is uniformly adjustable, so that the uniform loading of the spanner force can be realized.
The clamping of experimental tissues in the test plate can be operated on the screw arranged on the pressing plate through 4 holes on the upper surface of the test piece plate so as to compress the experimental tissues.
After the clamping of the anastomat and the positioning of the test piece plate are completed, the automatic loading of trigger firing force, the automatic measurement of trigger firing force and chuck closing force and the data display can be realized through the motion control of the screw-nut mechanism.
Drawings
Fig. 1 is a front view of a device (including a stapler) for measuring the cocking force and closing force of an endoscopic stapler of the present invention.
Fig. 2 is a front view of the device for measuring the force of cocking and closing of the endoscopic stapler of the present invention (without stapler).
Fig. 3 is a front view of the cocking force measurement section of the present invention with the hold down section removed.
Fig. 4 is a rear view of the invention.
Fig. 5 is a partial enlarged view of the area a in fig. 4.
Fig. 6 is a cross-sectional view of BB of fig. 5.
Fig. 7 is a cross-sectional view of the measuring head.
Fig. 8 is a top view of a test piece plate.
Fig. 9 is a cross-sectional view of a test piece plate.
Reference numerals:
the stapler 100, the pallet 1, the second screw-nut mechanism 2, the test piece plate 3, the data processing and display module 4, the swing link 5, the measuring head 6, the accommodating hole 61, the pressing plate 7, the top plate 71, the side plate 72, the pressing screw 8, the supporting nail 9, the first screw-nut mechanism 10, the L-shaped plate 11, the horizontal plate 111, the vertical plate 112, the sector hole 113, the circular arc track 114, the roller 12, the connecting shaft 13, the small shaft 14, the slide block 15, the positioning pin 16, the front supporting block 17, the fixing pin 18, the rear supporting block 19, the telescopic pin 20, the annular groove 201, the double-ended stud 21, the retainer ring 22, the circular arc groove 221, the pressing nut 23, the connecting seat 24, the fixing screw 25, the shaft sleeve 26, the mandrel 27, the shaft hole 271, the spring' 28, the force sensor 29, the set screw 30, the film sensor 31, the U-shaped plate 32, the lower plate 321, the upper plate 322, the experimental tissue 33, the pressing plate 34, the pressing screw 35, and the groove 36.
Detailed Description
Specific embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the following examples are illustrative of the present invention and are not intended to limit the scope of the present invention.
The experimental procedures, which do not address the specific conditions in the examples below, are generally performed under conventional conditions, or conditions supplied by the manufacturer.
The test object in the present embodiment is easynendo TM General laparoscopic cutting anastomat. Hereinafter referred to as anastomat.
Fig. 1 is a front view of the stapler of the present invention, fig. 2 is a front view of the stapler of the present invention removed, fig. 3 is a front view of the force measuring portion of the present invention removed from the pressing portion, and fig. 4 is a rear view of the present invention.
As shown in fig. 1, 2, 3 and 4, the measuring device for the impact force and the closing force of the endoscopic stapler comprises: the device comprises a bearing part, a clamping part, a wrenching force measuring part, a closing force measuring part, a data processing and displaying part and an L-shaped plate.
As shown in fig. 1, the L-shaped plate 11 includes: a horizontal plate 111 and a vertical plate 112, wherein a fan-shaped hole 113 is formed on the vertical plate 112;
as shown in fig. 3, the carrying part is used for placing the anastomat 100, and the carrying part comprises: the front support block 17, the rear support block 19, the support pins 9, the positioning pins 16, and the telescopic pins 20 are all installed at one side of the vertical plate 112 of the L-shaped plate 11.
The bearing part is used for supporting one side surface of the anastomat to be tested, the front supporting block 17 is arranged on the side surface of the rotating head of the anastomat 100, the rear supporting block 19 is arranged on the side surface of the machine body of the anastomat 100, the supporting nail 9 is arranged on the side surface of the handle, the positioning pin 16 is arranged below the rotating head of the anastomat 100, and the telescopic pin 20 is arranged at the transition circular arc of the rear side of the intersection of the handle and the machine body of the anastomat 100.
As shown in fig. 1 and 2, a clamping portion is provided on the other side of the stapler 100 for pressing the stapler 100 onto the carrying portion, the clamping portion including: a compacting plate 7 and a compacting screw 8.
The compression plate 7 comprises a top plate 71 and a side plate 72, the top plate 71 is fixedly arranged on a vertical plate 112 of the L-shaped plate, a space between the side plate 72 and the vertical plate 112 is used for accommodating the anastomat 100, two compression screws 8 are arranged on the side plates, the front ends of the compression screws 8 are abutted against the side surfaces of the anastomat 100, and clamping force is applied to the anastomat 100, so that the anastomat 100 is fixedly clamped between the side plate 72 and the vertical plate 112.
The trigger force measuring part is disposed below the anastomat 100 to be measured, and is used for measuring the trigger force of the anastomat 100 when being triggered, as shown in fig. 3, and comprises: the measuring device comprises a first screw nut mechanism 10, a swinging rod 5, a sliding block 15, a connecting shaft 13, a small shaft 14 and a measuring head 6, wherein the first screw nut mechanism 10 is arranged on the other side of an L-shaped plate 11, the first screw nut mechanism 10 is provided with a first nut, the swinging rod 5 is arranged in a fan-shaped hole 113 of the anastomat 100, the upper end of the swinging rod 5 is rotationally connected with a vertical plate 112 through a fixing pin 18, a roller 12 is arranged at the lower end of the swinging rod 5, the roller 12 rolls in a circular arc track 114 of the fan-shaped hole 113, one end of the connecting shaft 13 is fixedly arranged on the first nut and moves along with the first nut, the other end of the connecting shaft 13 is inserted into a kidney-shaped hole at the lower end of the swinging rod 5, the sliding block 15 is sleeved on the swinging rod 5, the sliding block 15 freely slides on the swinging rod 5, and the measuring head 6 is connected with the sliding block 15 on the swinging rod 5 through the small shaft 14. As shown in fig. 7, the lower part of the measuring head 6 is provided with a containing hole 61, a firing trigger of the anastomat is inserted into the containing hole 61, the measuring head 6 is provided with a set screw 30, the set screw 30 enters from the side wall of the containing hole 61, the front end presses the firing trigger, and the firing trigger and the measuring head 6 are fixed together.
When the first screw nut mechanism 10 is started, the second nut which moves linearly drives the connecting shaft 13 to move, the connecting shaft 13 is matched with the kidney-shaped groove on the swing rod 5 to drive the swing rod 5 to swing circumferentially with the fixed pin 18 as the center, and then the measuring head 6 is driven to move radially along the axial direction of the swing rod and tangentially perpendicular to the axial direction of the swing rod through the sliding block 15 and the small shaft 14 arranged on the sliding block, so that the movement of the measuring head 6 has certain plane adaptability. Since the measuring head 6 is fixedly connected with the firing trigger of the stapler 100 through the accommodating hole 61, the tangential movement of the measuring head 6 can drive the firing trigger to perform the firing action. The movement of the measuring head has plane arbitrary property, so the measuring head has good adaptability to the change of the trigger position in the firing process.
As shown in fig. 1, 2 and 4, the closing force measuring part is disposed at the chuck of the stapler 100, and is used for measuring the chuck closing force when the stapler 100 is fired, and the closing force measuring part includes: the test piece plate 3 is driven by the second screw nut mechanism 2, and can move up and down along a linear track.
As shown in fig. 4, 5 and 6, which are schematic views of the telescopic pin according to the present invention, the telescopic pin includes a telescopic pin body 20, a stud 21, a retainer ring 22 and a compression nut 23. As shown in fig. 6, the telescopic pin body 20 and the stud 21 are arranged on the vertical plate 112 side by side, an annular groove 201 is formed at the tail of the telescopic pin body 20 and is engaged with the retainer ring 22, and the retainer ring 22 is fixed on the vertical plate 112 by the stud 21 and the compression nut 23. As shown in fig. 5, the outer edge of the retainer ring 22 is provided with an arc groove 221. When the telescopic pin body 20 is in operation, both sides of the retainer ring 22 are caught in the annular groove 201 of the telescopic pin body 20. When the anastomat 100 is assembled and disassembled, the telescopic pin body 20 is required to be pulled out from the other side of the L-shaped plate 11, the compression nut 23 can be loosened at this time, the retainer ring 22 is rotated, the circular arc groove 221 on the retainer ring 22 is aligned with the telescopic pin body 20, and the telescopic pin body 20 can be pulled out from the vertical plate.
As shown in fig. 7, which is a cross-sectional view of the measuring head of the present invention, the measuring head 6 includes a spindle 27, a sleeve 26, a force sensor 29, a spring 28, a connection base 24, a set screw 25, and a set screw 30. One end of the mandrel 27 is provided with a shaft hole 271 which is sleeved on the small shaft 14, and the other end of the mandrel 27 is arranged in the shaft sleeve 26. The connection holder 24 has a connection holder groove 241 and a boss 242 at one end, and a receiving hole 61 at the other end, the connection holder groove 241 surrounding the boss 242. The spring 28 is arranged in the shaft sleeve 26 and sleeved on the other end of the mandrel 27, one end of the spring 28 abuts against the lower end of the shoulder 272 of the mandrel 27, and the other end abuts against the connecting seat groove 241. Shoulder 272 on spindle 27 mates with a recess in sleeve 26 to prevent spindle 27 from backing out of sleeve 26. The spindle 27 is slidable along the axial direction of the sleeve 26. The shaft sleeve 26 is buckled with the connecting seat 24 and is connected with each other through the fixing screw 25, and a force sensor 29 is arranged between the lower end of the mandrel 27 and a boss 242 of the connecting seat 24. A receiving hole 61 in the lower portion of the connecting seat 24 for insertion of the firing trigger and secures the firing trigger and the measuring head 6 in the receiving hole 61 by the set screw 30.
As shown in fig. 8 and 9, the test piece plate 3 includes a U-shaped plate 32, an experimental tissue 33, a thin film sensor 31, a pressing plate 35, and a pressing screw 34 for the preparation of the clamping of the experimental tissue 33 and the measurement of the closing force. The experimental tissue 33 may be a human or animal tissue, or a polymer material such as silica gel having a similar property to the human tissue. As shown in fig. 9, the U-shaped plate 32 includes a lower plate 321 and an upper plate 322, the corresponding positions of the upper and lower plates are provided with grooves 36, the shape of the grooves 36 is consistent with the shape of the outer edge of the chuck of the stapler, the experimental tissue is arranged below the upper plate, the pressing plate is arranged below the experimental tissue, the pressing screw enters from the upper plate 322 of the U-shaped plate 32, and the front end presses the pressing plate 35. As shown in fig. 8, the film sensor 31 is stuck to the upper surface of the experimental tissue.
The using method of the measuring device for the pulling force and the closing force of the endoscope anastomat comprises the following steps:
the firing trigger of the stapler 100 is inserted into the receiving hole 61 of the measuring head 6, tightening the set screw 30. The measuring head 6 is now in a free state and is not connected to the small shaft.
The compression nut 23 on the retainer ring 22 of the telescopic pin is loosened, the retainer ring 22 is rotated, the circular arc groove 221 on the retainer ring 22 is aligned with the telescopic pin 20, the telescopic pin 20 is pulled out of the vertical plate 112, the inner side end surface of the telescopic pin 20 is flush with the surface of the vertical plate 112, the anastomat 100 to be tested is put in from the gap between the compression plate 7 and the vertical plate 112, one side surface of the anastomat is abutted against the supporting part, the telescopic pin 20 is reset, the retainer ring 22 is rotated, the two side surfaces of the retainer ring are clamped in the annular groove 201 of the telescopic pin 20, and the retainer ring fastening nut 23 is tightened to fix the telescopic pin 20. The rotary head of the stapler 100 is brought into contact with the positioning pin 16, and the transition arc of the rear side of the intersection of the handle of the stapler 100 with the body is brought into contact with the telescopic pin 20.
The small shaft 14 is inserted into a hole at the upper end of the measuring head mandrel 27 by adjusting the positions of the swing rod 5 and the swing rod upper sliding block 15.
And (3) pulling a spanner on the compression screw 8, applying a compression force to one side of the anastomat 100, and compressing the anastomat 100 on the bearing part to complete the positioning and clamping of the anastomat 100. Thereby completing the connection of the measuring device to the tested stapler 100.
The height of the test piece plate bracket 1 is adjusted by controlling the movement of the second screw nut mechanism 2, so that the upper surface of the lower plate of the test piece plate 3 is flush with the working lower surface of the chuck of the anastomat 100; the slotted portion of the test piece plate 3 is aligned with the outer contour of the collet of the stapler 100 by manually adjusting the position of the test piece plate 3 on the plane of the bracket 2.
The data processing and display module 4 is used for setting the rotating speed of the screw rod in the first screw-nut mechanism 10 and starting the measuring device, so that the percussion force is uniformly loaded on the trigger of the anastomat 100, and the percussion trigger force is displayed in real time through the display. When the trigger is moved to the set position, the jaws of stapler 100 are closed and locked, at which time the closing force of the three test points on the jaws of stapler 100 can be read by the display.
Although in the embodiment of the invention, the invention is described as easyEndo TM The general endoscopic cutting stapler is exemplified by the structure of the device for the endoscopic stapler pulling force and the chuck closing force, but the structure and the principle of the device can be used for the development of related measuring devices of other types of staplers, so that the adaptability changes of other types of staplers based on the principle and the structure are also included in the protection scope of the invention.
Claims (6)
1. A device for measuring the cocking force and closing force of an endoscopic stapler, comprising:
the bearing part, the clamping part, the impact force measuring part, the closing force measuring part, the data processing and displaying part and the L-shaped plate,
wherein the L-shaped plate comprises: the device comprises a vertical plate and a horizontal plate, wherein a fan-shaped hole is formed in the vertical plate;
the bearing part includes: the front support block, the rear support block, the support nail, the positioning pin and the telescopic pin are all arranged on one side of the L-shaped plate vertical plate, the front support block is supported on the side surface of the rotary head of the anastomat, the rear support block is supported on the side surface of the body of the anastomat, the support nail is supported on the side surface of the handle of the anastomat, the positioning pin is positioned below the rotary head of the anastomat, and the telescopic pin is arranged at a transition circular arc of the rear side of the intersection of the upper part of the handle of the anastomat and the body;
the clamping portion includes: the compressing plate comprises a top plate and a side plate, the top plate is fixedly arranged on a vertical plate of the L-shaped plate, the anastomat is accommodated between the side plate and the vertical plate, the compressing screw is arranged on the side plate, the front end of the compressing screw is propped against the side surface of the anastomat, and clamping force is applied to the anastomat;
a cocking force measurement section comprising: the device comprises a first screw nut mechanism, a swing rod, a sliding block, a connecting shaft, a small shaft and a measuring head, wherein the first screw nut mechanism is arranged on the other side of an L-shaped plate vertical plate, the first screw nut mechanism is provided with a first nut, the swing rod is arranged in a fan-shaped hole, the upper end of the swing rod is rotationally connected with the L-shaped plate, a roller is arranged at the lower end of the swing rod, the roller rolls in an arc track of the fan-shaped hole, one end of the connecting shaft is fixedly arranged on the first nut, the other end of the connecting shaft is inserted into a kidney-shaped hole at the lower end of the swing rod, the sliding block is sleeved on the swing rod and freely slides on the swing rod, the measuring head is connected with the sliding block on the swing rod through the small shaft, and a containing hole is formed in the lower part of the measuring head, and a firing trigger of the anastomat is inserted into the containing hole;
a closing force measuring section corresponding to a chuck position of the stapler, the closing force measuring section including: the test piece plate is arranged on the support table, and moves up and down along a linear track under the drive of the second screw nut mechanism;
and the data processing and displaying part is used for collecting, processing and displaying the trigger force and closing force input signals.
2. The endoscopic stapler pull-down force and closing force measuring device according to claim 1, wherein:
the measuring head is provided with a set screw, the set screw enters from the side wall of the accommodating hole, and the front end of the set screw presses the firing trigger tightly.
3. The endoscopic stapler pulling force and closing force measuring device according to claim 1, wherein:
the measuring head comprises a core shaft, a shaft sleeve, a force sensor, a spring, a connecting seat, a fixing screw and a set screw, wherein one end of the core shaft is provided with a shaft hole, the shaft hole is sleeved on the small shaft, the other end of the core shaft is arranged in the shaft sleeve, one end of the connecting seat is provided with a connecting seat groove and a boss, the other end of the connecting seat groove is provided with a containing hole, the connecting seat groove surrounds the boss, the spring is arranged in the shaft sleeve and sleeved on the other end of the core shaft, one end of the spring abuts against the lower end of the shoulder of the core shaft, the other end of the spring abuts against the connecting seat groove, the shoulder of the core shaft is matched with a groove in the shaft sleeve, the core shaft can slide along the axis direction of the shaft sleeve, the shaft sleeve is buckled with the connecting seat and is connected with each other through the fixing screw, the force sensor is arranged between the lower end of the core shaft and the boss of the connecting seat, and the containing hole is arranged at the lower part of the connecting seat.
4. The endoscopic stapler pulling force and closing force measuring device according to claim 1, wherein:
the test piece plate includes: the experimental device comprises a U-shaped plate, experimental tissues, a film sensor, a pressing plate and a compression screw, wherein the U-shaped plate comprises an upper plate and a lower plate, the corresponding positions of the upper plate and the lower plate are grooved, the shape of the groove is consistent with the shape of the outer edge of a chuck of the anastomat, the experimental tissues are arranged on the lower plate, the pressing plate is arranged on the experimental tissues, the compression screw enters from the upper plate of the U-shaped plate, the front end of the compression screw is compressed with the pressing plate, and the film sensor is adhered to the upper surface of the experimental tissues.
5. The endoscopic stapler pulling force and closing force measuring device according to claim 1, wherein:
the telescopic pin assembly comprises a telescopic pin body, a double-end stud, a retainer ring and a gland nut, wherein the telescopic pin body and the double-end stud are arranged side by side, the retainer ring is fixed on an L-shaped plate by the double-end stud and the gland nut, a clamping groove is formed in the tail of the telescopic pin body and is clamped with the retainer ring, an arc groove is formed in the outer edge of the retainer ring, and when the arc groove rotates to one side of the telescopic pin body, the telescopic pin body can be separated from the arc groove.
6. The method for measuring the trigger force and the closing force of the endoscope anastomat is characterized by comprising the following steps of:
step one: inserting a firing trigger of the anastomat into an accommodating hole of the measuring head, and tightening a fixing screw;
step two, loosening a compression nut on a baffle ring of the telescopic pin, rotating a retainer ring to enable an arc groove on the baffle ring to be aligned with the telescopic pin, extracting the telescopic pin from a vertical plate, putting a tested anastomat into a gap between the compression plate and the vertical plate, enabling one side surface of the tested anastomat to abut against a supporting part, resetting the telescopic pin, rotating the retainer ring to enable two side surfaces of the retainer ring to be clamped in the annular groove of the telescopic pin, tightening the retainer ring fastening nut to fix the telescopic pin, enabling a rotating head of the anastomat to be in contact with a positioning pin, enabling a transitional arc part on the intersecting rear side of an anastomat handle and a machine body to be in contact with the telescopic pin,
step three, the small shaft on the slide block is inserted into the shaft hole at the upper end of the measuring head mandrel by adjusting the positions of the swing rod and the slide block,
step four, pulling a spanner on the compression screw rod, applying a compression force to one side of the anastomat, compressing the anastomat on the bearing part, and completing positioning and clamping of the anastomat;
step five, adjusting the height of the test piece plate bracket by controlling the movement of the second screw nut mechanism so that the upper surface of the lower plate of the test piece plate is flush with the working lower surface of the chuck of the anastomat; manually adjusting the position of the test piece plate on the plane of the bracket to align the slotted part of the test piece plate with the outer contour of the chuck of the anastomat;
step six, setting the rotating speed of a screw in the first screw nut mechanism through a data processing and displaying module, starting a measuring device, enabling the firing force to be uniformly loaded on a trigger of the anastomat, displaying the firing trigger force in real time through a display, closing and locking the chuck of the anastomat when the trigger moves to a set position, and displaying the firing force and closing force values of three test points on the chuck of the anastomat through the display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810930190.5A CN108918009B (en) | 2018-08-15 | 2018-08-15 | Device and method for measuring pulling force and closing force of endoscopic stapler |
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| CN201810930190.5A CN108918009B (en) | 2018-08-15 | 2018-08-15 | Device and method for measuring pulling force and closing force of endoscopic stapler |
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| CN108918009B true CN108918009B (en) | 2023-12-05 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110907158B (en) * | 2019-12-05 | 2021-11-09 | 山东威瑞外科医用制品有限公司 | Comprehensive test system of anastomat |
| CN111141435B (en) * | 2019-12-31 | 2022-02-11 | 苏州越众生物科技有限公司 | Method and device for testing percussion force of medical anastomat |
| CN113331896B (en) * | 2021-06-07 | 2022-04-15 | 苏州法兰克曼医疗器械有限公司 | Anastomat with high self-supporting stability during use |
| CN116429309B (en) * | 2023-06-08 | 2023-08-22 | 苏州玛福乐斯医疗科技有限公司 | Firing force testing equipment and method for intelligent endoscope anastomat |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB678003A (en) * | 1949-07-16 | 1952-08-27 | Harcourt Lester Forgaard | Improvements in machines for testing nuts and bolts, and like fastenings |
| CN101592573A (en) * | 2009-06-08 | 2009-12-02 | 清华大学 | Tension and compression and tired loading experiment machine based on laser confocal microscope |
| CN103760006A (en) * | 2014-01-02 | 2014-04-30 | 上海大学 | Artificial hip joint fatigue testing device |
| CN208621221U (en) * | 2018-08-15 | 2019-03-19 | 上海健康医学院 | A kind of hysteroscope stapler pulls the measuring device for hitting power and closing force |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100428782B1 (en) * | 2001-04-11 | 2004-04-27 | 삼성전자주식회사 | Apparatus for measuring tension of pogo pin |
-
2018
- 2018-08-15 CN CN201810930190.5A patent/CN108918009B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB678003A (en) * | 1949-07-16 | 1952-08-27 | Harcourt Lester Forgaard | Improvements in machines for testing nuts and bolts, and like fastenings |
| CN101592573A (en) * | 2009-06-08 | 2009-12-02 | 清华大学 | Tension and compression and tired loading experiment machine based on laser confocal microscope |
| CN103760006A (en) * | 2014-01-02 | 2014-04-30 | 上海大学 | Artificial hip joint fatigue testing device |
| CN208621221U (en) * | 2018-08-15 | 2019-03-19 | 上海健康医学院 | A kind of hysteroscope stapler pulls the measuring device for hitting power and closing force |
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