CN115844495A - Integrated puncture grasping forceps - Google Patents

Abstract

The invention discloses an integrated puncture nipper, which comprises: the device comprises a grasping tube, a puncture tube sleeved outside the grasping tube, a push-pull rod fixedly connected with the puncture tube and used for driving the puncture tube to synchronously move, a rotating seat movably connected with the push-pull rod and suitable for driving the push-pull rod to do rotating motion, and a handle part rotationally matched with the rotating seat; one end of the forceps pipe, which is far away from the handle part, is provided with a forceps head which is suitable for opening and closing movement, and one end of the puncture pipe, which is far away from the handle part, is provided with a puncture head; the grasping tube penetrates through the push-pull rod and the rotating seat and then is connected with a pull rod extending into the rotating seat from the handle part, and the handle part is provided with a movable handle which is connected with the pull rod and is used for driving the grasping head to open and close; the handle portion is internally provided with a movable handle which is used for driving the forceps head of the grasping forceps to do opening and closing motions, and the movable handle is connected with a triggering linkage structure.

Description

Integrated puncture grasping forceps

Technical Field

The invention relates to the technical field of medical instruments, in particular to an integrated puncture nipper.

Background

Puncture needle and nipper are two kinds of medical apparatus commonly used in the course of minimally invasive surgery. Wherein the puncture needle can be used for puncturing organs and tissues or injecting medicines, and the grasping forceps are usually matched with a laparoscope for various laparoscopic operations. Of course, when performing laparoscopic surgery, puncture needles are sometimes used, either for puncture perforation before opening the abdomen or for intraoperative penetration of organs or tissues into the abdominal cavity.

For the two instruments, if the two instruments are used separately, namely the instruments need to be replaced in the operation process, on one hand, the problem of low operation efficiency exists when the medical instruments are replaced, on the other hand, the whole operation cost is increased, because the instruments are mostly disposable instruments for laparoscopic surgery, the comprehensive cost of the various instruments can be settled in the operation cost of a patient, the operation cost can be reduced by reducing the types and the number of the operation instruments, the cost pressure of the patient can be synchronously reduced, and the doctor-patient relationship is alleviated.

In view of the above circumstances, an integrated composite grasper capable of having both functions of a puncture and a grasper has appeared in the prior art, for example, an active forceps for puncture disclosed in CN205831834U is disclosed, which combines the puncture function and the biopsy sampling function by providing a left tip portion and a right tip portion at distal positions of a pair of forceps heads of a biopsy forceps, so that the biopsy forceps puncture a tissue organ through the distal tip portions, and then perform a tissue sampling biopsy. Under the structure, the whole active forceps synchronously have a puncture function, and the dual-purpose effect of one instrument is realized. However, it has been found that, in this case, the left side tip portion and the right side tip portion have a triangular pyramid, rectangular pyramid or polygonal pyramid structure in the closed state of the jaw portion, and although the puncture function can be effectively achieved, the tapered portions existing in the circumferential direction thereof are likely to cause unintended damage to the tissue during the grasping of the tissue, that is, the safety during the grasping of the tissue is low.

In addition, in the use of nipper, need realize the switching mode control of its binding clip opening closed through the handle, it is specific, medical personnel's hand exerts the maintenance to the state that the nipper opened closed through the continuous effort of hand to the handle, that is to say after the nipper has snatched the tissue, the hand can not loosen and just can keep the effective centre gripping to the tissue, if the careless pine of hand appears, the binding clip just probably opens and leads to the tissue to drop from the binding clip. Care must be taken and the handle maintained in such procedures by the medical practitioner. Especially, if the hand is loosened during the process of taking out the grasping forceps from the body after the grasping forceps have grasped the tissue, the sampling fails, and the grasping operation needs to be operated again, so that the operation progress is delayed, and secondary damage can be caused during the sampling process.

Therefore, aiming at the commonly adopted grasping forceps in the prior art, the service performance of the handle component for controlling the opening and closing of the forceps heads still needs to be further improved, so that the forceps heads of the grasping forceps can keep a relatively closed state to keep an effective clamping state for tissues under the condition that medical personnel grasp the tissues even if the hands do not apply continuous pinching power to the handle component.

Disclosure of Invention

The invention aims to provide an integrated puncture grasping forceps to optimize the technical problem of overall use performance of a puncture grasping forceps piece in a tissue grasping process.

The integrated puncture nipper is realized as follows:

an integrated piercing grasper, comprising: the device comprises a grasping tube, a puncture tube sleeved outside the grasping tube, a push-pull rod fixedly connected with the puncture tube and used for driving the puncture tube to synchronously move, a rotating seat movably connected with the push-pull rod and suitable for driving the push-pull rod to do rotating motion, and a handle part rotationally matched with the rotating seat;

one end of the forceps pipe, which is far away from the handle part, is provided with a forceps head which is suitable for opening and closing movement, and one end of the puncture pipe, which is far away from the handle part, is provided with a puncture head; and

the grasping tube penetrates through the push-pull rod and the rotating seat and is connected with a pull rod extending into the rotating seat from the handle part, and the handle part is provided with a movable handle which is connected with the pull rod and is used for driving the grasping head to open and close;

a movable handle for driving a forceps head of the grasping forceps to open and close is arranged in the handle part, and the movable handle is connected with a firing linkage structure;

the triggering linkage structure comprises a connecting rod connected with the movable handle, a sliding seat connected with the connecting rod, toothed parts formed on the sliding seat and distributed in a strip shape, and pawls suitable for meshing with the toothed parts;

a coil spring is arranged between the pawl and the handle part; the handle part is also provided with a toggle button for toggling the pawl in a sliding fit mode.

In an optional embodiment of the present invention, the sliding seat is provided with strip-shaped hollow-out grooves distributed along the sliding direction thereof;

and a spring suitable for stretching deformation is arranged between the inner cavity wall of the handle part and the groove wall of the strip-shaped hollow groove.

In an optional embodiment of the invention, a pull rod seat is arranged between the grab clamp pipe and the pull rod;

the grasping forceps tube is fixedly connected with the pull rod seat; and

the pull rod is rotationally matched with the pull rod seat;

an annular groove is formed at the end part of the pull rod connected with the pull rod seat, and a pair of clamping joints which are suitable for being clamped into the annular groove are formed at the end part of the pull rod seat facing the pull rod;

the pull rod seat is arranged in the rotating seat and is suitable for moving in the rotating seat along the axial direction of the pull rod; and the pull rod seat is suitable for rotating synchronously along with the rotating seat, and the pull rod seat rotates relative to the pull rod.

In an optional embodiment of the invention, a clamping groove for clamping the rotary seat is formed in the handle part; and

the rotary seat is integrally formed with a connector inserted into the handle part; an annular clamping groove is formed in the outer wall of the connector, and an annular convex clamping head is formed in the wall of the clamping groove;

the clamping head is in clamping fit with the clamping groove.

In an optional embodiment of the invention, the connecting head is also fixedly connected with an annular pawl wheel; and

a pawl limiting wheel which is suitable for being matched and connected with the annular pawl wheel is fixedly connected in the handle part;

the pull rod sequentially penetrates through the pawl limiting wheel and the annular pawl wheel and then is connected with the pull rod seat.

In an optional embodiment of the invention, an eccentric wheel connected with a pull rod is arranged on the movable handle; and

a connecting pin is arranged between the movable handle and the handle part, and an elastic connecting body is arranged between the movable handle and the handle part.

In an optional embodiment of the present invention, a strip-shaped limiting groove is formed in the push-pull rod along the axial movement direction of the push-pull rod, and a positioning notch communicating with the strip-shaped limiting groove is formed in one groove wall of the strip-shaped limiting groove;

an elastic connecting piece is also arranged between the rotating seat and the push-pull rod; the rotary seat is movably matched with a movable block, the movable block is provided with a positioning block which is suitable for extending into the strip-shaped limiting groove, and the positioning block is suitable for being embedded into the positioning notch to form a stop for axial movement of the push-pull rod; and

a shifting block is movably assembled on the rotating seat; the shifting block is connected with the movable block, namely the shifting block is suitable for driving the movable block to move so as to switch the matching and the separation of the positioning block and the positioning notch.

In an alternative embodiment of the present invention, the rotating base includes an upper base body and a lower base body which are suitable for matching and assembling; wherein

The upper seat body is movably connected with the movable block and the shifting block at the same time; and

the lower seat body is connected with the elastic connecting piece.

In an optional embodiment of the invention, the end face of the movable block, which is far away from the strip-shaped limiting groove, is also movably matched with a sliding block; the end face, facing the shifting block, of the sliding block is provided with a protruding limiting column which is used for being inserted into the shifting block; and

an inclined sliding groove which is distributed in an inclined manner relative to the axial movement direction of the push-pull rod is formed in the shifting block;

the limiting column part extends into the inclined sliding groove to form sliding fit of the limiting column and the inclined sliding groove;

when the shifting block moves along the axial direction of the push-pull rod, the limiting column moves in the inclined sliding groove so that the sliding block moves relative to the movable block along the movement direction vertical to the shifting block.

In an optional embodiment of the invention, two accommodating cavities are respectively formed in the movable block and positioned at two sides of the limiting column, and a spring body is embedded in each accommodating cavity; and

each elastic body is axially limited between the cavity wall of the containing cavity and the sliding block;

when the sliding block moves relative to the movable block along the direction perpendicular to the moving direction of the shifting block, one of the pair of elastic bodies positioned on the two sides of the limiting column is compressed.

By adopting the technical scheme, the invention has the following beneficial effects: according to the integrated puncture grasping forceps, the puncture function and the grasping forceps function are switched by the relative motion between the puncture pipe and the grasping forceps pipe through the matching of the grasping forceps pipe and the puncture pipe sleeved on the outer side of the grasping forceps pipe, so that the dual-purpose function of the whole puncture grasping forceps is realized. And through the cooperation of push-and-pull rod, roating seat and shifting block for the push-and-pull rod can be axial motion under the effect of shifting block and movable block, drives the simultaneous movement of puncture pipe from this, can make puncture pipe and nipper pipe switch different user state under the structure like this, and integral type puncture nipper can realize puncture and snatch two independent functions of tissue like this in the use, and mutual noninterference, just can avoid puncture the pipe to cause unexpected damage to the tissue at the in-process of snatching the tissue like this structure.

In addition, a firing linkage structure connected with the movable handle; the trigger linkage structure is characterized in that the pawl and the tooth-shaped part on the sliding seat are matched for use through the sliding seat and the pawl which are matched for use, so that the pawl can be occluded with the tooth-shaped part on the sliding seat under the action of pulling the movable handle on the sliding seat, the integral sliding seat can keep the stability of the position of the sliding seat in the inner cavity of the handle part under the occlusion action, the sliding seat cannot shift in the inner cavity of the handle part even if a hand does not exert continuous acting force on the movable handle any more, the clamp tube connected with the sliding seat can keep the stability of the state, the clamp head connected with the clamp tube keeps a continuous clamping state on tissues, and the problem that the clamp head is opened unexpectedly due to the error of hand operation is avoided.

Drawings

FIG. 1 is a schematic structural view of an integral piercing grasper of the present invention;

FIG. 2 is a partial schematic view of the first integrated piercing grasper of the present invention;

FIG. 3 is a second partial schematic view of the integrated piercing grasper of the present invention;

FIG. 4 is a schematic view of the partial structure of the integrated piercing grasper of the present invention;

FIG. 5 is a fourth partial schematic structural view of the integral piercing grasper of the present invention;

FIG. 6 is a schematic view in partial cross-section of the integrated piercing grasper of the present invention;

FIG. 7 is a schematic view of the structure of the push-pull rod and the rotary base of the integrated piercing grasper of the present invention;

FIG. 8 is a schematic structural view of the movable block of the integrated piercing grasper of the present invention;

FIG. 9 is a schematic view of the movable block and push-pull rod of the integrated piercing grasper of the present invention in a first view;

FIG. 10 is a schematic view of the movable block and push-pull rod of the integrated piercing grasper of the present invention shown in a second perspective;

FIG. 11 is a schematic view of the fitting structure of the limiting post and the inclined chute of the shifting block of the integrated piercing nipper of the invention;

FIG. 12 is a schematic view of the structure of the rotary seat and the shifting block of the integrated piercing nipper of the invention;

FIG. 13 is a schematic view of the structure of the rotary seat and the push-pull rod of the integrated piercing grasper of the present invention in cooperation with the elastic connector;

FIG. 14 is a schematic view of the structure of the integrated piercing grasper of the present invention in view of the cooperative piercing function;

FIG. 15 is a schematic view of the configuration of the integrated piercing grasper of the present invention in its functional configuration;

FIG. 16 is a schematic view of the procedure from the corresponding grasper functional state to the puncture functional state of the integrated puncture grasper of the present invention.

In the figure: the puncture tube 1, the grasper tube 2, the puncture head 11, the grasper head 21, the push-pull rod 3, the strip-shaped limiting groove 31, the positioning notch 32, the rotary seat 4, the upper seat body 41, the lower seat body 42, the assembly groove 43, the snap-in port 45, the mounting cavity 46, the limiting groove 47, the elastic connector 5, the movable block 6, the positioning block 61, the limiting protrusion 62, the sliding block 63, the limiting post 64, the accommodating cavity 65, the spring body 66, the toggle block 7, the toggle seat 71, the trigger portion 72, the elastic latch block 73, the inclined sliding groove 75, the pull rod 9, the annular groove 91, the pull rod seat 200, the snap-in head 201, the snap-in groove 81, the snap head 82, the snap groove 49, the annular ratchet wheel 301, the ratchet limiting wheel 302, the connector 902, the handle portion 901, the movable handle, the connecting rod 903, the sliding seat 904, the toothed portion 906, the pawl 907, the coil spring 908, the strip-shaped hollow groove 909, the hinge portion 921, the hinge portion 910, the engagement portion 911, the toggle plate 912, the mounting seat 915, the base portion 914, the taper button 916, the spring 918, the snap-in the tab 923, and the snap-in the ear.

Detailed Description

In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

Referring to fig. 1 to 16, in the present embodiment, an integrated puncturing grasper is provided, which includes a grasper tube 2, a puncturing tube 1 sleeved outside the grasper tube 2, a push-pull rod 3 fixedly connected to the puncturing tube 1 and used for driving the puncturing tube 1 to move synchronously, a rotating base 4 movably connected to the push-pull rod 3 and adapted to drive the push-pull rod 3 to rotate, and a handle portion 8 rotatably engaged with the rotating base 4; the puncture tube 1 and the nipper tube 2 can move relatively. One end of the forceps tube 2, which is far away from the handle part 8, is provided with a forceps head 11 which is suitable for opening and closing movement, and one end of the puncture tube 1, which is far away from the handle part 8, is provided with a puncture head 11.

It should be noted that the puncture tube 1 and the grasper tube 2 herein can adopt a conventional puncture tube 1 and a grasper tube 2, and when puncturing is required, only the puncture tube 1 needs to be moved, so that the grasper head 21 connected with the grasper tube 2 and the grasper tube 2 is completely folded into the puncture tube 1 for straight-line puncturing operation. When the grasping head 21 is required to grasp tissues, the grasping head 21 can extend out of the outer side of the puncturing tube 1 by only axially moving the puncturing tube 1, only the grasping head 21 can contact the tissues at the moment, the puncturing tube 1 is coated on the outer side wall of the grasping tube 2 and cannot contact the tissues, and unexpected damage to the tissues can be avoided. Therefore, the puncture tube 1, the grasper tube 2 and the grasper head 21 adopted in the application of the scheme can be conventional mature structures, and only the puncture tube 1 and the grasper tube 2 need to be sleeved for use.

Based on the above structure, the grasper tube 2 penetrates the push-pull rod 3 and the rotary base 4 and is connected to the pull rod 9 extending from the handle portion 8 into the rotary base 4, and the handle portion 8 is provided with a movable handle 100 connected to the pull rod 9 for driving the grasper head 21 to perform opening and closing movements.

Furthermore, a draw bar seat 200 is arranged between the nipper pipe 2 and the draw bar 9; the grasping forceps tube 2 is fixedly connected with the pull rod seat 200; and the pull rod 9 is rotatably matched with the pull rod seat 200. In an alternative aspect, illustrated in the attached drawings, the pull rod 9 and the pull rod seat 200 are rotatably engaged with each other by the following structure:

an annular groove 91 is formed at the end part of the pull rod 9 connected with the pull rod seat 200, and a pair of clamping joints 201 suitable for being clamped into the annular groove 91 are formed at the end part of the pull rod seat 200 facing the pull rod 9; under the condition that the pull rod seat 200 and the pull rod 9 are assembled in place, a part of the pull rod 9 is clamped and embedded in the pull rod seat 200, so that the pull rod seat 200 and the pull rod 9 are effectively connected and cannot be separated. It should be noted that the pull rod seat 200 is disposed in the rotary seat such that the pull rod seat 200 can rotate synchronously with the rotation of the rotary seat 4, and the pull rod seat 200 is suitable for moving in the rotary seat 4 along the axial direction of the pull rod 9, during which the rotary seat 4 is kept stationary while the pull rod seat 200 performs the axial movement. For the rotation of the rotary seat 4, the finger of the medical staff can directly dial the rotary seat 4 in combination with the actual operation process. When the lever base 200 rotates synchronously with the rotary base 4, the lever base 200 rotates relative to the pull rod 9, i.e. based on the structure, when the lever base 200 rotates with the rotary base 4, the pull rod 9 is not rotated synchronously but fixed in the handle portion 8. In general, the pull rod 9 and the pull rod base 200 can move in a synchronous axial movement, but do not rotate synchronously.

In addition, it should be noted that the rotation fit relationship formed between the rotary seat 4 and the handle portion 8 is realized by the following structure:

a clamping groove 81 for clamping the rotary seat 4 is formed in the handle part 8; and the rotary base 4 is integrally formed with a connector 48 for insertion into the handle portion 8; an annular clamping groove 49 is formed on the outer wall of the connector 48, and a clamping head 82 which is annular and convex is formed on the wall of the clamping groove 81; the clamping head 82 and the clamping groove 49 are in clamping fit suitable for relative rotation; under such a structure, the rotating base 4 and the handle portion 8 can be effectively connected to avoid the separation of the two, but when the rotating base 4 rotates, the handle portion 8 can be kept relatively still and cannot follow the rotation.

In order to control the progress of the rotating seat 4 when the medical staff manually rotates the rotating seat 4, and avoid the rotating seat 4 from rotating too fast and being uncontrolled, and also improve the accuracy of the rotation regulation of the rotating seat 4, the implementation designs that the connector 48 is fixedly connected with an annular pawl wheel 301; and a pawl limiting wheel 302 which is suitable for being matched and connected with the annular pawl wheel 301 is fixedly connected in the handle part 8, and a matching surface between the annular pawl wheel 301 and the pawl limiting wheel 302 is a plurality of tooth grooves which are continuously arranged in the circumferential direction. When the rotating seat 4 rotates, the pawl limiting wheel 302 does not rotate, the annular pawl wheel 301 rotates relative to the pawl limiting wheel 302, and a 'click' sound can be generated in the rotating process, so that the rotating stroke of medical staff is prompted; the pull rod 9 passes through the pawl limiting wheel 302 and the annular pawl wheel 301 in sequence and then is connected with the pull rod seat 200. This embodiment realizes synchronously through the rotation of roating seat 4 that grab pincers pipe 2 and puncture pipe 1's rotation, so not only at the puncture process, all can adjust operation angle through the rotation of roating seat 4 at the in-process of grabbing the tissue moreover to improve the convenience and the precision of operation.

In addition, for the driving process of the opening and closing movement of the grasper head 21, the present embodiment adopts the following manner: a movable handle 902 for driving the head of the grasping forceps to open and close and a firing linkage structure connected with the movable handle 902 are arranged in the handle portion 901.

Specifically, the firing linkage structure comprises a connecting rod 903 connected with the movable handle 902, a sliding seat 904 connected with the connecting rod 903, a toothed part 906 which is formed on the sliding seat 904 and distributed in a strip shape, and a pawl 907 which is suitable for being meshed with the toothed part 906; the sliding seat 904 is used for connecting with the forceps tube of the grasping forceps, so that the linear movement of the sliding seat 904 in the inner cavity of the handle portion 901 drives the forceps tube to make linear movement, thereby realizing the switching of the opening and specific movement of the forceps head connected with the forceps tube. The specific structure and implementation principle of the forceps tube and forceps head herein can adopt the mature technology in the prior art, and the embodiment is not limited in any way.

Based on the above structure, furthermore, a coil spring 908 is provided between the pawl 907 and the handle portion 901; and a dial 916 for dialing the pawl 907 is slidably coupled to the handle portion 901. When the pawl 907 is dialed through the dial 916, the coil spring 908 deforms, so that the dial 916 releases the meshing state of the pawl 907 and the tooth-shaped part under the dialing action of the pawl 907; after the force applied by the dial 916 to the pawl 907 is released, the pawl 907 is reset under the reset action of the coil spring 908 and then returns to the meshing state with the tooth-shaped part. That is, the pawl 907 is held in engagement with one of the teeth of the tooth form portion in the normal spring 918 state of the coil spring 908, and the pawl 907 can be released from engagement with the tooth form portion in the deformed state of the coil spring 908.

It should be noted that the sliding seat 904 in this embodiment is provided with strip-shaped hollow grooves 909 distributed along the sliding direction. A spring 918 suitable for stretching deformation is arranged between the inner cavity wall of the handle portion 901 and the groove wall of the strip-shaped hollow groove 909. The spring 918 is designed so that the sliding seat 904 can be restored under the elastic restoring force of the spring 918 after the engagement of the tooth-shaped portion on the sliding seat 904 with the pawl 907 is released. During the resetting process, the connecting rod 903 connected with the spring 918 seat can be reset, so that the movable handle connected with the connecting rod 903 is also reset synchronously, and therefore, the spring 918 is not required to be additionally arranged between the movable handle and the inner cavity of the handle part 901 in the embodiment.

It should be further noted that the pull rod 9 of the present embodiment is connected to the strip-shaped hollow-out groove 909 of the sliding seat 904 through the following structure:

a clamping block 921 is matched and connected with the end part of the pull rod 9 inserted into the strip-shaped hollow groove 909, and a clamping lug 923 is arranged in the strip-shaped hollow groove 909 and is connected with the axial end of the clamping block 921; the structure prevents the fixture block 921 from separating from the strip-shaped hollow groove 909, so that the sliding seat 904 can drive the pull rod 9 to move synchronously. The latch 921 here can be in threaded connection with the pull rod 9, so that the end of the pull rod 9 is sleeved with a clip 912 after being inserted into the strip-shaped hollow groove 909, thereby realizing the anti-drop fit between the pull rod 9 and the sliding seat 904.

In more detail, the sliding seat 904 is further provided with a connecting column for rotatably engaging with the connecting rod 903. The movable handle is provided with a hinge part 910 which is rotationally matched with the inner cavity wall of the handle part 901 and a connecting part 911 which is rotationally matched with the connecting rod 903; wherein, a supporting surface which is matched with the joint part 911 in a sliding way is formed on the inner cavity wall of the handle part 901.

In addition, it should be noted that the inner cavity wall of the handle portion 901 is provided with a mounting seat 913 for rotationally cooperating with the pawl 907. A dial plate 912 adapted to be in abutting engagement with the pawl 907 is integrally connected to the dial 916. The pawl 907 comprises a base 914 for rotationally mating with the inner cavity wall of the handle portion 901 and a tapered tip 915 integrally formed on the base 914 and adapted to engage with the tooth-shaped portion; and the side wall of the cone tip 915 facing away from the connecting rod 903 is a smooth flat end surface. The dial 916 is mounted on the housing of the handle portion 901 for allowing a user to dial the dial 916, and the dial plate 912 is inserted through the wall of the handle portion 901 into the inner cavity of the handle portion 901 for abutting engagement with the pawl 907.

In summary, for the firing handle assembly of the present embodiment:

through a firing linkage structure connected to the movable handle 902; the trigger linkage structure is characterized in that the sliding seat 904 and the pawl 907 are used in cooperation, and the pawl 907 is used in cooperation with the toothed part 906 on the sliding seat 904, so that under the action of pulling the movable handle on the sliding seat 904, the pawl 907 can be meshed with the toothed part 906 on the sliding seat 904, the integral sliding seat 904 can keep the stability of the position of the sliding seat 904 in the inner cavity of the handle portion 901 under the meshing action, the sliding seat 904 cannot be displaced in the inner cavity of the handle portion 901 even if the hand does not exert continuous acting force on the movable handle any more, the forceps tube connected with the sliding seat 904 can keep the stability of the state, the forceps head connected with the forceps tube keeps the continuous clamping state of tissues, and the problem that the forceps head is unexpectedly opened due to the error of operation of the hand is avoided.

More specifically, when the movable handle is pinched by the hand, the sliding seat 904 will move towards the side away from the forceps head, at this time, the spring 918 connected with the sliding seat 904 will be stretched and deformed, and during the movement of the sliding seat 904, the tooth-shaped portion will continuously rub against the pawl 907, and at this time, the pawl 907 will be engaged with different teeth of the adjacent tooth-shaped portion in sequence. In the process, if the medical staff feels that the hand is excessively pinched, that is, the sliding seat 904 is excessively moved, the sliding seat 904 needs to be retracted for a certain distance, at the moment, the hand is only needed to stir the dial button 916, so that the pawl 907 is disengaged from the tooth-shaped part, and the sliding seat 904 can be reset towards one side of the forceps head. This back and forth adjustment is performed until the slide block 904 is moved into position within the interior cavity of the handle portion 901 to maintain effective gripping of the forceps head with respect to the tissue. When the clamping of the tissue is finished and the tissue needs to be released, the hand pokes the toggle button 916, so that the pawl 907 is contacted with the occlusion of the tooth-shaped part, and at the moment, in the process that the sliding seat 904 is reset under the action of the spring 918, the sliding seat 904 can drive the forceps tube to move towards one side of the forceps head, and therefore the opening of the forceps head connected with the forceps tube is realized. Therefore, the switching control of the opening and the closing of the forceps head is realized.

Based on the above structure, the puncturing and grabbing functions of the integrated puncturing grasper of the present embodiment are switched and adjusted by the following structure:

in general, the above-mentioned adjustment process is realized by the push-pull tube, the rotary seat 4 and the shifting block 7 which are used together.

In detail, referring to the drawings, the push-pull rod 3 is used for being fixedly connected with the puncture tube 1 of the integrated puncture grasping forceps and is used for driving the puncture tube 1 to move synchronously through axial movement of the push-pull rod 3; a strip-shaped limiting groove 31 is formed in the push-pull rod 3 along the axial movement direction of the push-pull rod, and a positioning notch 32 communicated with the strip-shaped limiting groove 31 is formed in one groove wall of the strip-shaped limiting groove 31. In order to enable the push-pull rod 3 to be matched with the puncture tube 1 and the grasper tube 2 to be normally used, a through hole suitable for the grasper tube 2 to penetrate through is further arranged in the push-pull rod 3 in a penetrating manner along the axial movement direction of the push-pull rod, the puncture tube 1 and the through hole are fixedly connected, so that the axial movement of the push-pull rod 3 can drive the puncture tube 1 to synchronously move, and the grasper tube 2 is movably matched with the through hole, so that the axial movement of the push-pull rod 3 cannot drive the grasper tube 2 to synchronously move, and the state of the grasper tube 2 can be kept from being influenced by the push-pull rod 3.

And the rotating seat 4 is movably matched and connected with the push-pull rod 3, and the rotating seat 4 is suitable for driving the push-pull rod 3 to do synchronous rotating motion. In more detail, the rotating seat 4 comprises an upper seat 41 and a lower seat 42 suitable for being assembled in a matching way; the end faces of the upper seat body 41 and the lower seat body 42 facing each other are respectively formed with an assembly cavity for fitting the push-pull rod 3. The specific fitting cavity is adapted to fit the portion of the push-pull rod 3 where the strip-shaped limiting groove 31 is formed.

Furthermore, an elastic connecting piece 5 is arranged between the rotating seat 4 and the push-pull rod 3; lower housing 42 is connected to resilient connecting member 5. And the end surface of the push-pull rod 3 departing from the strip-shaped limiting groove 31 is also provided with a concave matching groove 33 for matching the elastic connecting piece 5. The elastic connecting element 5 here can alternatively be a spring. And the elastic connection piece 5 here can form an elastic tension during the axial movement of the push-pull rod 3.

Furthermore, a movable block 6 is movably coupled in the rotary seat 4, and a positioning block 61 adapted to extend into the strip-shaped limiting groove 31 is disposed on the movable block 6, and the positioning block 61 is adapted to be inserted into the positioning notch 32 to form a stop for the axial movement of the push-pull rod 3. Here, when the positioning block 61 is embedded in the positioning notch 32, the push-pull rod 3 cannot drive the puncture tube 1 to perform synchronous axial movement, and only when the positioning block 61 is separated from the positioning notch 32, the push-pull rod 3 can drive the puncture tube 1 to perform synchronous axial movement, that is, the fitting and separation of the positioning block 61 and the positioning notch 32 become a switching adjustment point of the axial movement state of the push-pull rod 3. The positioning block 61 is here also adapted to abut the end of the push-pull rod 3 remote from the puncture head 11 of the puncture tube 1. Specifically, the end of the push-pull rod 3 away from the puncture head 11 of the puncture tube 1 in the present embodiment includes two tips distributed in a staggered manner, one of the two tips is recessed in an L-shape relative to the other tip, and the positioning block 61 is adapted to abut against the end recessed in the L-shape of the two tips.

The rotating seat 4 is further movably connected with a shifting block 7, the shifting block 7 is connected with the movable block 6, and the specific shifting block 7 is suitable for driving the movable block 6 to move so as to switch the matching and the separation of the positioning block 61 and the positioning notch 32. The upper base body 41 is movably connected with the movable block 6 and the shifting block 7. In detail with reference to the drawings, the dial block 7 adopted in the present embodiment includes a dial seat 71 connected to the movable block 6 and a trigger portion 72 integrally connected to the dial seat 71; the rotating seat 4 is provided with an assembling groove 43 for matching with the shifting seat 71; the rotating base 4 is also provided with a clamping interface 45 for matching the triggering part 72; one side of trigger portion 72 is equipped with the elasticity fixture block 73 that is suitable for from the lateral wall of assembling groove 43 one side butt joint interface 45, and this elasticity fixture block 73's one end links to each other with trigger portion 72, and the other end is used for the movable end then of butt joint interface 45's lateral wall, takes shape in trigger portion 72's inside and has the holding tank that is suitable for the movable end embedding, under this structure, when trigger portion 72 passes through joint interface 45, the movable end can be embedded into in the holding tank temporarily, and when trigger portion 72 and joint interface 45 break away from, the movable end then can stretch out the holding tank outside.

In more detail, the upper seat body 41 is provided therein with a mounting cavity 46 for accommodating the movable block 6; a limit groove 47 which is perpendicular to the axial movement direction of the push-pull rod 3 is formed on the wall of the mounting cavity 46; and a limit projection 62 which is in clamping fit with the limit groove 47 is formed on the movable block 6. With this arrangement, the overall movable block 6 is limited in its path of movement in the upper body 41 and can only move in a direction perpendicular to the axial direction of the push-pull rod 3.

The matching relationship between the movable block 6 and the shifting block 7 is realized through the following structure:

the end surface of the movable block 6, which is far away from the strip-shaped limiting groove 31, is also movably matched with a sliding block 63; the end surface of the sliding block 63 facing the shifting block 7 is provided with a convex limiting column 64 for inserting into the shifting block 7, and the limiting column 64 and the sliding block 63 form a fixed connection relationship. In addition, inclined slide grooves 75 are formed in the pusher 7 so as to be inclined with respect to the axial direction of the push-pull rod 3, and here, the end portion of the inclined slide groove 75 facing the puncture tip 11 is inclined toward the positioning notch 32 of the push-pull rod 3 with respect to the axial direction of the push-pull rod 3. The part of the limit column 64 extends into the inclined chute 75 to form sliding fit of the limit column 64 and the inclined chute 75; when the shifting block 7 moves along the axial direction of the push-pull rod 3, the limit post 64 moves in the inclined sliding groove 75 to move the sliding block 63 relative to the movable block 6 in a direction perpendicular to the moving direction of the shifting block 7.

In addition, it should be noted that, an accommodating cavity 65 is formed in the movable block 6 and located at two sides of the limiting column 64, and a spring body 66 is embedded in each accommodating cavity 65; each elastic body is axially limited between the cavity wall of the accommodating cavity 65 and the sliding block 63; when the sliding block 63 moves relative to the movable block 6 in the direction perpendicular to the moving direction of the dial 7, one of the pair of elastic bodies located on both sides of the stopper post 64 is compressed.

In summary, the specific implementation principle of the integrated piercing grasper of the present embodiment is as follows:

the integrated puncture nipper is used for puncturing: the push-pull rod 3 is in an extended state relative to the rotating seat 4, that is, at this time, the strip-shaped limiting groove 31 on the push-pull rod 3 partially extends out of one end of the rotating seat 4 facing the puncture head 11, and the puncture head 11 located at the far-hand end of the puncture tube 1 is wrapped by the forceps head 21 at the far-hand end of the forceps tube 2, that is, the whole forceps head 21 is completely folded in the puncture tube 1, so as to facilitate puncturing. More specifically, the elastic connecting element 5 is in a tensile deformation state, the shifting block 7 moves on the rotating base 4 to the end of the rotating base 4 facing the puncture head 11, and the limit post 64 is located at the end of the inclined chute 75 of the shifting block 7 facing away from the puncture head 11. The positioning block 61 is separated from the positioning notch 32, the integral movable block 6 is positioned at one end of the push-pull rod 3 far away from the puncture head 11, and the positioning block 61 is abutted to one end of the push-pull rod 3 far away from the puncture head 11 and recessed in an L shape from two ends of the end, and the positioning block 61 is abutted to the side wall of the clamping opening 45 of the rotating seat 4 from one side of the assembling groove 43, and furthermore, when the elastic clamping block 73 arranged at one side of the triggering part 72 of the shifting block 7 is abutted to the side wall of the clamping opening 45 of the rotating seat 4 from one side of the assembling groove 43, the integral shifting block 7, the positioning block 61, the push-pull rod 3 and the elastic connecting piece 5 in a stretching state are kept in a relative state when the shifting block 7 moves towards one side far away from the puncture head 11 by not applying pressure on the shifting block 7, so as to keep the stability of the state of the puncture forceps head 21 covered by the puncture tube 1, and further ensure the normal use of the puncture function.

In the switching process from the puncture state to the tissue grasping state of the grasping forceps:

the shifting block 7 is manually shifted, so that the elastic clamping block 73 of the shifting block 7 retracts into the accommodating groove of the triggering part 72, and thus the whole shifting block 7 can move towards the side far away from the puncture head 11 on the rotating seat 4, in the process, the limiting column 64 on the movable block 6 can generate relative movement with the shifting block 7 along the inclined sliding groove 75, at the moment, the spring body 66 in the accommodating cavity 65 on the side of the movable block 6 facing the moving direction of the sliding block 63 is gradually compressed until the spring body 66 can not be compressed any more, namely, only the whole movable block 6 can move relative to the push-pull rod 3 in the direction perpendicular to the axial direction of the push-pull rod 3 until the positioning block 61 releases the abutting joint of the end part of the push-pull rod 3 departing from the puncture head 11 along with the movement of the movable block 6, so that the push-pull rod 3 loses the limiting effect of the positioning block 61 and can drive the puncture tube 1 to move towards the side near the hand end under the elastic restoring force of the elastic connecting part 5, and the grapple 21 can gradually extend out of the puncture head 11. In the process of axial movement of the push-pull rod 3, as long as the positioning block 61 does not contact the positioning notch 32, the spring body 66 in the accommodating cavity 65 of the movable block 6 facing to one side of the moving direction of the sliding block 63 belongs to a compression deformation state, until the positioning block 61 aligns at the positioning notch 32, at this time, due to the elastic reset acting force of the spring body 66, the movable block 6 can drive the positioning block 61 to move relative to the rotating base 4 so that the positioning block 61 enters the positioning notch 32, so that after the positioning block 61 is inserted into the positioning notch 32, the elastic clamping block 73 on the shifting knob also moves right to one side of the clamping opening 45 deviating from the puncture head 11, and then the elastic clamping block 73 restores the elastic natural state under the elastic reset action. With the structure, the state that the integrated puncture grasping forceps are used for grasping tissues is switched, and the limit column 64 is positioned at the end part of the inclined sliding groove 75 of the shifting block 7, which is relatively close to the puncture head 11. In this state, when the dial 7 is not pressed to retract the elastic latching blocks 73 into the receiving grooves of the triggering portion 72 to move the dial 7 toward the puncture head 11, the overall dial 7, the positioning block 61, the push-pull rod 3, and the elastic connecting member 5 in a natural elastic state maintain stability of a relative state, thereby maintaining stability of a state in which the grasper head 21 protrudes outside the puncture head 11, and further ensuring normal use of the grasping function.

In the switching process from the grasping of the tissue by the grasping forceps to the puncture state:

the shifting block 7 is manually shifted, so that the elastic clamping block 73 of the shifting block 7 retracts into the accommodating groove of the triggering part 72, so that the whole shifting block 7 can move towards one side of the puncture head 11 on the rotating seat 4, in the process, the limiting column 64 on the movable block 6 can generate relative movement with the shifting block 7 along the inclined sliding groove 75, at the moment, the spring body 66 in the accommodating cavity 65 on one side of the movable block 6 in the moving direction of the sliding block 63 is gradually compressed until the spring body 66 can not be compressed any more, namely, only the whole movable block 6 can move relative to the push-pull rod 3 in the direction perpendicular to the axial direction of the push-pull rod 3 until the positioning block 61 breaks away from the positioning notch 32 on the push-pull rod 3 along with the movement of the movable block 6, and thus, due to the loss of the limiting effect of the positioning block 61, the push-pull rod 3 is manually pulled, so that the push-pull rod 3 can drive the puncture tube 1 to move towards one side of the puncture head 11, and the puncture tube 1 moves towards one side of the far hand end, and the grasping head 21 can gradually retract into the puncture tube 1. During the axial movement of the push-pull rod 3, as long as the positioning block 61 does not contact the end of the push-pull rod 3 away from the puncture head 11, the spring body 66 in the accommodating cavity 65 on the side facing the moving direction of the sliding block 63 in the movable block 6 is in a compression deformation state until the positioning block 61 rotates the end of the push-pull rod 3 away from the puncture head 11 recessed in the L shape in the two ends of the end, at this time, under the restoring action of the spring body 66 in the accommodating cavity 65, the movable block 6 moves with the positioning block 61, so that the positioning block 61 rotates the end of the push-pull rod 3 away from the puncture head 11 against the end recessed in the L shape in the two ends of the end, and the elastic connecting member 5 is gradually stretched and deformed during the movement of the push-pull rod 3 toward the puncture head 11. Under the condition, the elastic latch 73 on the dial button also moves right to the side wall of the side of the latch port 45 facing the puncture head 11, and then the elastic latch 73 makes the elastic latch 73 restore to the elastic natural state under the elastic resetting action. Therefore, the state that the integrated puncture nipper is used for puncture is switched, and the limit column 64 is positioned at the end part of the inclined chute 75 of the shifting block 7, which is relatively far away from the puncture head 11. In this state, when the pusher 7 is not pressed to retract the elastic latching blocks 73 into the receiving grooves of the trigger part 72 and the pusher 7 moves away from the puncture tip 11, the pusher 7, the positioning block 61, the push-pull rod 3, and the elastic coupling member 5 in the stretched and deformed state are kept stable in a relative state, so that the stability in a state where the grasper head 21 is completely accommodated in the puncture tube 1 is maintained, and the normal use of the puncture function is ensured.

Moreover, no matter the integral puncture nipper of the embodiment is used for puncturing or grabbing tissues, the puncture tube 1 and the nipper tube 2 can be driven to rotate by the finger rotating seat 4, so that the operation angle can be conveniently adjusted.

The above embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the present product is conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the present invention, unless otherwise expressly stated or limited, the first feature may be present on or under the second feature in direct contact with the first and second feature, or may be present in the first and second feature not in direct contact but in contact with another feature between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

Claims (10)

1. An integrated piercing grasper, comprising: the device comprises a grasping tube, a puncture tube sleeved outside the grasping tube, a push-pull rod fixedly connected with the puncture tube and used for driving the puncture tube to synchronously move, a rotating seat movably connected with the push-pull rod and suitable for driving the push-pull rod to do rotating motion, and a handle part rotationally matched with the rotating seat;

one end of the forceps grasping pipe, which is far away from the handle part, is provided with a forceps grasping head which is suitable for opening and closing motions, and one end of the puncture pipe, which is far away from the handle part, is provided with a puncture head; and

the grasping tube penetrates through the push-pull rod and the rotating seat and is connected with a pull rod extending into the rotating seat from the handle part, and the handle part is provided with a movable handle which is connected with the pull rod and is used for driving the grasping head to open and close;

a movable handle for driving a forceps head of the grasping forceps to open and close is arranged in the handle part, and the movable handle is connected with a firing linkage structure;

the triggering linkage structure comprises a connecting rod connected with the movable handle, a sliding seat connected with the connecting rod, toothed parts formed on the sliding seat and distributed in a strip shape, and pawls suitable for meshing with the toothed parts;

a coil spring is arranged between the pawl and the handle part; the handle part is also provided with a toggle button for toggling the pawl in a sliding fit mode.

2. The integrated piercing nipper as claimed in claim 1, wherein the sliding seat is provided with strip-shaped hollow grooves distributed along the sliding direction thereof;

and a spring suitable for stretching deformation is arranged between the inner cavity wall of the handle part and the groove wall of the strip-shaped hollow groove.

3. The integrated piercing grasper of claim 1, wherein a pull rod seat is provided between the grasper tube and the pull rod;

the grasping forceps tube is fixedly connected with the pull rod seat; and

the pull rod is rotationally matched with the pull rod seat;

an annular groove is formed at the end part of the pull rod connected with the pull rod seat, and a pair of clamping joints which are suitable for being clamped into the annular groove are formed at the end part of the pull rod seat facing the pull rod;

the pull rod seat is arranged in the rotating seat and is suitable for moving in the rotating seat along the axial direction of the pull rod; and the pull rod seat is suitable for rotating synchronously along with the rotating seat, and the pull rod seat rotates relative to the pull rod.

4. The integrated puncture nipper as claimed in claim 1 or 3, wherein a clamping groove for clamping the rotating seat is formed in the handle part; and

the rotary seat is integrally formed with a connector inserted into the handle part; an annular clamping groove is formed in the outer wall of the connector, and an annular convex clamping head is formed in the wall of the clamping groove;

the clamping head is in clamping fit with the clamping groove.

5. The integrated puncture nipper as claimed in claim 4, wherein the connecting head is further fixedly connected with an annular pawl wheel; and

a pawl limiting wheel which is suitable for being matched and connected with the annular pawl wheel is fixedly connected in the handle part;

the pull rod sequentially penetrates through the pawl limiting wheel and the annular pawl wheel and then is connected with the pull rod seat.

6. The integrated piercing nipper as claimed in claim 1, wherein an eccentric wheel connected with a pull rod is provided on the movable handle; and

a connecting pin is arranged between the movable handle and the handle part, and an elastic connecting body is arranged between the movable handle and the handle part.

7. The integrated puncture nipper as claimed in claim 1, wherein the push-pull rod is provided with a strip-shaped limiting groove along the axial movement direction thereof, and one of the groove walls of the strip-shaped limiting groove is provided with a positioning notch communicated with the strip-shaped limiting groove;

an elastic connecting piece is also arranged between the rotating seat and the push-pull rod; a movable block is movably matched in the rotary seat, a positioning block which is suitable for extending into the strip-shaped limiting groove is arranged on the movable block, and the positioning block is suitable for being embedded into the positioning notch to form a stop for axial movement of the push-pull rod; and

a shifting block is movably assembled on the rotating seat; the shifting block is connected with the movable block, namely the shifting block is suitable for driving the movable block to move so as to switch the matching and the separation of the positioning block and the positioning notch.

8. The integrated piercing grasper of claim 7, wherein the swivel includes an upper housing and a lower housing adapted for mating assembly; wherein

The upper seat body is movably connected with the movable block and the shifting block at the same time; and

the lower seat body is connected with the elastic connecting piece.

9. The integrated puncture nipper as claimed in claim 7, wherein the end surface of the movable block departing from the strip-shaped limiting groove is movably connected with a sliding block; the end face, facing the shifting block, of the sliding block is provided with a protruding limiting column which is used for being inserted into the shifting block; and

an inclined sliding groove which is distributed in an inclined manner relative to the axial movement direction of the push-pull rod is formed in the shifting block;

the limiting column part extends into the inclined sliding groove to form sliding fit of the limiting column and the inclined sliding groove;

when the shifting block moves along the axial direction of the push-pull rod, the limiting column moves in the inclined sliding groove so that the sliding block moves relative to the movable block along the movement direction vertical to the shifting block.

10. The integrated piercing nipper as claimed in claim 7, wherein an accommodating cavity is formed in the movable block and located on both sides of the limiting column, and a spring body is embedded in each accommodating cavity; and

each elastic body is axially limited between the cavity wall of the containing cavity and the sliding block;

when the sliding block moves relative to the movable block along the direction perpendicular to the moving direction of the shifting block, one of the pair of elastic bodies positioned on the two sides of the limiting column is compressed.

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