CN213217453U - Blood vessel puncher with novel crop - Google Patents

Abstract

The utility model relates to a medical device, which provides a blood vessel puncher with a novel crop, the utility model discloses a set up the round platform type recess with special tapering on the crop, when cooperating with the cutter and shearing, the round platform type recess can not contact with the blood vessel wall, forms the structure of keeping away the blank, can effectively project the shearing edge angle outside, for the hole puncher without recess, has effectively increased the shearing ability; meanwhile, a cutting edge platform is formed between the circular truncated cone-shaped groove and the outer peripheral side of the circular cylindrical platform, the cutting edge platform is small, the shearing capability of the outer cutting edge during shearing cannot be influenced, the cutting edge strength is enhanced, and the problems that a sharp cutting edge is weak in strength, a virtual cutter is easy to generate, the cutting edge is easy to deform, the cutter cannot be used due to rolling and the like are solved; meanwhile, the push column is longer in length and can be inserted into a blood vessel with a thicker wall thickness, so that the punching operation on the blood vessels with different wall thicknesses is realized.

Description

Blood vessel puncher with novel crop

Technical Field

The utility model relates to a medical device, in particular to a blood vessel puncher with a novel crop.

Background

In the heart bypass surgery or other surgeries requiring blood vessel transplantation and grafting, a hole needs to be drilled in the grafted blood vessel wall for grafting the grafted blood vessel, and instruments for drilling the blood vessel wall are generally used: blood vessel hole puncher, in view of blood vessel hole puncher's in service behavior, there is very high requirement to the shearing ability of product, in order to ensure that operation in-process hole puncher can cut the vascular wall smoothly, quick shaping aperture, guarantee that the vascular wall of excision is complete with vascular separation, the unable phenomenon of separating such as fascial adhesion, be convenient for with the blood vessel of transplanting with the blood vessel high-speed joint that punches, reduce operation operating time, consequently, improve blood vessel hole puncher's shearing ability, sharpness, reduce adhesion, be blood vessel hole puncher's core competition technology, also be the problem that blood vessel hole puncher waited to solve urgently.

SUMMERY OF THE UTILITY MODEL

The utility model provides a blood vessel puncher with novel crop, through set up the round platform type recess that has special tapering on the crop, when cooperating with the cutter and cuting, the round platform type recess can not contact with the vascular wall, forms the structure of keeping away the sky, can effectively bulge the shearing edge angle in the outside, for the hole puncher that does not have the recess, has effectively increased the shearing ability; meanwhile, a cutting edge platform is formed between the circular truncated cone-shaped groove and the outer peripheral side of the circular cylindrical platform, the cutting edge platform is small, the shearing capability of the outer cutting edge during shearing cannot be influenced, the cutting edge strength is enhanced, and the problems that a sharp cutting edge is weak in strength, a virtual cutter is easy to generate, the cutting edge is easy to deform, the cutter cannot be used due to rolling and the like are solved; meanwhile, the push column is longer in length and can be inserted into a blood vessel with a thicker wall thickness, so that the punching operation on the blood vessels with different wall thicknesses is realized.

The technical scheme of the utility model is realized like this:

a vascular punch with a novel crop, comprising: the cutting device comprises a handheld part and a cutting structure, wherein the cutting structure is arranged on the handheld part;

the cutting structure comprises a cutting head and a cutter, the cutting head and the cutter are both connected with the handheld part, and the cutting head and the cutter are driven by the handheld part to cut the vascular wall;

the cutting head is of an integrally formed structure and comprises a guide-in head, a neck post, a push post and a connector which are sequentially connected, the connector is fixedly connected with the handheld part, and the push post is slidably connected with the handheld part;

the guiding head comprises a circular truncated cone platform and a circular ring cylinder platform, the circular ring cylinder platform is positioned on the lower bottom of the circular truncated cone platform, a circular truncated cone through hole is formed in the circular ring cylinder platform, and the neck post penetrates through the circular truncated cone through hole and then is connected with the circular truncated cone platform;

a cutting edge is formed between the lower bottom and the side surface of the circular cylinder platform, and a cutting edge platform is formed at the lower bottom of the circular cylinder platform; the cutting knife is sleeved on the outer periphery of the push column in a sliding mode, and the blade edge is matched with the cutting knife to cut the vascular wall.

Furthermore, the push column is an elongated push column.

Furthermore, the connector is a clamp column.

Further, the hand-held part comprises an outer tube, a pull rod, a spring split pin, a spring, a key connecting sleeve, a key and a handle; the connector is detachably arranged at the end a of the pull rod, and the spring cotter pin is vertically sleeved at the end b of the pull rod; the spring post is fixed at the end b of the pull rod, and the spring is sleeved on the spring post; the outer pipe is sleeved on the outer peripheral sides of the push column, the pull rod and the spring; the cutter is sleeved on the inner side of the end c of the outer pipe, and the key is arranged at the end d of the outer pipe through the key connecting sleeve; the spring is simultaneously in contact connection with the b end of the pull rod and the key connecting sleeve; the spring split pin penetrates through the outer pipe and is fixedly connected with the handle.

Further, the taper of the through hole of the circular truncated cone body is the same as that of the platform of the circular truncated cone body.

Further, the cutter and the outer tube are in interference fit.

Furthermore, the key connecting sleeve is glued on the outer pipe.

The utility model discloses a set up the round platform type recess that has special tapering on the crop, when cooperating with the cutter and cuting, the round platform type recess can not contact with the vascular wall, forms the structure of keeping away the sky, can effectively bulge the shearing limit angle in the outside, and the difference is to the hole puncher that does not have the recess, has effectively increased the shearing ability; meanwhile, a cutting edge platform is formed between the groove and the outer peripheral side of the circular cylindrical platform, the cutting edge platform is small, the shearing capability of the outer cutting edge during shearing cannot be influenced, the cutting edge strength is enhanced, and the problems that a sharp cutting edge is weak in strength, a virtual cutter is easy to generate, the cutting edge is easy to deform, a cutter is wound, and the like are solved; meanwhile, the push column is longer in length and can be inserted into a blood vessel with a thicker wall thickness, so that the punching operation on the blood vessels with different wall thicknesses is realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for a customer of ordinary skill in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a cross-sectional view of a vascular punch with a novel cutting head in an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an alternative configuration of the vascular punch with the novel cutting head of FIG. 1;

FIG. 3 is a cross-sectional view of the cutting head of the vascular punch with the novel cutting head of FIGS. 1 and 2;

fig. 4 is an enlarged view of the structure at a of the cutting head shown in fig. 3.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the embodiment of the present invention, as shown in fig. 1-4, the blood vessel perforator with the novel head cutting function comprises a handheld portion 2 and a cutting structure 1, wherein the cutting structure 1 is mounted on the handheld portion 2;

the cutting structure 1 comprises a cutting head 11 and a cutter 12, both the cutting head 11 and the cutter 12 are connected with the handheld part 2, and the cutting head 11 and the cutter 12 are driven by the handheld part 2 to cut the vessel wall;

the cutting head 11 is an integrated structure and comprises a guiding head 111, a neck post 112, a pushing post 113 and a connecting head 114 which are connected in sequence, the connecting head 114 is fixedly connected with the handheld part 2, and the pushing post 113 is connected with the handheld part 2 in a sliding manner;

the lead-in head 111 comprises a circular truncated cone platform 1111 and a circular ring cylinder platform 1114, the circular ring cylinder platform 1114 is positioned on the lower bottom of the circular truncated cone platform 1111, a circular truncated cone 1115 through hole is formed in the circular ring cylinder platform 1114, the neck post 112 penetrates through the circular truncated cone 1115 and then is connected with the circular truncated cone platform 1111, namely a circular truncated cone groove is formed between the neck post 112 and the circular ring cylinder platform 1114, namely the position indicated by the circular truncated cone 1115;

a knife edge 1112 is formed between the lower bottom and the side surface of the circular cylindrical platform 1114, and a knife edge platform 1113 is formed at the lower bottom of the circular cylindrical platform 1114; the cutting knife 12 is sleeved on the outer periphery of the push column 113 in a sliding manner, and the blade edge 1112 is matched with the cutting knife 12 to cut the vessel wall;

after the truncated cone-shaped groove is arranged, when the cutter 12 is matched with the cutting head 11 for shearing, the truncated cone-shaped groove cannot be contacted with a blood vessel wall, a clearance structure is formed, a shearing edge angle on the outer side can be effectively protruded, and the shearing capacity is effectively improved compared with a hole puncher without a groove;

meanwhile, a cutting edge platform 1113 is formed between the circular truncated cone-shaped groove and the outer peripheral side of the circular cylindrical platform 1114, the cutting edge platform 1113 is small, the shearing capacity of the outer cutting edge during shearing cannot be influenced, the cutting edge strength is enhanced, and the problems that a sharp cutting edge is weak in strength, a virtual cutter is easy to generate, the cutting edge is easy to deform, a rolling cutter cannot be used and the like are solved.

In the embodiment of the present invention, as shown in fig. 1-4, the pushing post 113 is an elongated pushing post, and after the length of the pushing post 113 is elongated, the pushing post can be inserted into a blood vessel with a thicker wall thickness, so as to realize the punching operation on blood vessels with different wall thicknesses.

In the embodiment of the present invention, as shown in fig. 1-4, the connector 114 is a clamp column, i.e. connected to the pull rod 22 through the pin 121, and the connection is simple and easy to disassemble using the pin 121 without occupying the internal space, thereby greatly simplifying the structure and simplifying the installation and disassembly steps.

In the embodiment of the present invention, as shown in fig. 1-4, the handle 2 includes an outer tube 21, a pull rod 22, a spring cotter 24, a spring 26, a key connecting sleeve 27, a key 28 and a handle 23; the connector 114 is detachably mounted at the end a of the pull rod 22, and the spring cotter pin 24 is vertically sleeved at the end b of the pull rod 22; the outer tube 21 is simultaneously sleeved on the outer peripheral sides of the push column 113, the pull rod 22 and the spring 26; the cutter 12 is detachably fixed on the inner side of the end c of the outer tube 21 in a fixed way, and the key 28 is arranged at the end d of the outer tube 21 through a key connecting sleeve 27; the spring 26 is simultaneously in contact connection with the end b of the pull rod 22 and the key connecting sleeve 27; a spring cotter pin 24 passes through the outer tube 21 and is fixedly connected with the handle 23.

In the embodiment of the present invention, as shown in fig. 1-4, the taper of the through hole 1115 is the same as the taper of the platform 1111.

In the embodiment of the present invention, as shown in fig. 1-4, the cutter 12 is in interference fit with the outer tube 21.

In the embodiment of the present invention, as shown in fig. 1-4, the key connecting sleeve 27 is glued to the outer tube 21.

In the embodiment of the utility model, see fig. 1-4, in operation, at first cut the cross mouth on the vascular wall (the diameter of cross mouth is less than the diameter in shaping hole), then insert crop 11 in the vascular wall, the button 28 is pressed to the thumb, forefinger and middle finger exert force to the handle, the handle will be power through spring split pin 24, pull rod 22, spring post 25 transmits for crop 11, crop 11 returns and contracts, produce the shearing force with cutter 12, cut the vascular wall, accomplish the hole of shaping crop size, then loosen the application force to the handle, inside spring 26 pops out the crop, accomplish whole action of punching.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A vascular punch with a novel crop, comprising: the cutting device comprises a handheld part and a cutting structure, wherein the cutting structure is arranged on the handheld part;

the method is characterized in that: the cutting structure comprises a cutting head and a cutter, the cutting head and the cutter are both connected with the handheld part, and the cutting head and the cutter are driven by the handheld part to cut the vascular wall;

the cutting head is of an integrally formed structure and comprises a guide-in head, a neck post, a push post and a connector which are sequentially connected, the connector is fixedly connected with the handheld part, and the push post is slidably connected with the handheld part;

the guiding head comprises a circular truncated cone platform and a circular ring cylinder platform, the circular ring cylinder platform is positioned on the lower bottom of the circular truncated cone platform, a circular truncated cone through hole is formed in the circular ring cylinder platform, and the neck post penetrates through the circular truncated cone through hole and then is connected with the circular truncated cone platform;

a cutting edge is formed between the lower bottom and the side surface of the circular cylinder platform, and a cutting edge platform is formed at the lower bottom of the circular cylinder platform; the cutting knife is sleeved on the outer periphery of the push column in a sliding mode, and the blade edge is matched with the cutting knife to cut the vascular wall.

2. The blood vessel punch with novel crop of claim 1, wherein: the push column is an elongated push column.

3. The blood vessel punch with novel crop of claim 1, wherein: the connector is a clamp column.

4. The blood vessel punch with novel crop of claim 1, wherein: the handheld part comprises an outer pipe, a pull rod, a spring split pin, a spring, a key connecting sleeve, a key and a handle;

the connector is detachably arranged at the end a of the pull rod, and the spring cotter pin is vertically sleeved at the end b of the pull rod;

the outer pipe is sleeved on the outer peripheral sides of the push column, the pull rod and the spring;

the cutter is sleeved on the inner side of the end c of the outer pipe, and the key is arranged at the end d of the outer pipe through the key connecting sleeve;

the spring is simultaneously in contact connection with the b end of the pull rod and the key connecting sleeve;

the spring split pin penetrates through the outer pipe and is fixedly connected with the handle.

5. The blood vessel punch with novel crop of claim 1, wherein: the taper of the through hole of the circular truncated cone body is the same as that of the platform of the circular truncated cone body.

6. The blood vessel punch with novel crop of claim 4, wherein: the cutter and the outer tube are in interference fit.

7. The blood vessel punch with novel crop of claim 4, wherein: the key connecting sleeve is glued on the outer pipe.

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