CN215960034U - Water injection electrothermal biopsy forceps - Google Patents

Abstract

The utility model discloses a water injection electrothermal biopsy forceps, which comprises a forceps head structure, a connecting structure, a forceps head control structure, a spraying pipe assembly and an electrode plug electrically connected with the forceps head structure; the two ends of the connecting structure are respectively rotatably connected with the tong head structure and the tong head control structure, the spray pipe assembly comprises a water injection pipe connected with the connecting structure and a spray pipe extending out of the front end of the tong head structure, a water inlet of the spray pipe is positioned inside the connecting structure, and the spray pipe is communicated with the water injection pipe through an inner cavity of the connecting structure; the forceps head control structure is connected with the forceps head structure through the spraying pipe and drives the forceps head structure to rotate or drives the forceps head structure to clamp or loosen lesion tissues. The utility model can improve the water tightness of parts and effectively avoid water flow from leaking out of the periphery of the tong head structure.

Description

Water injection electrothermal biopsy forceps

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a pair of water injection electrothermal biopsy forceps.

Background

The thermal biopsy forceps are used for connecting the biopsy forceps with electrode equipment, so that the forceps heads are electrified to electrically cut cell tissues, the cutting process is rapid, and bleeding is less. The thermal biopsy forceps in the prior art have the following defects: (1) the hot biopsy forceps do not have a water injection pipe or the water injection pipe and the forceps head which are arranged on the forceps can not be synchronously controlled, tissue can not be clamped in time after the cell tissue is flushed by the water injection pipe, and the tissue can not be accurately clamped under the condition of large and fast bleeding amount. (2) When the forceps head rotates, the outer tube also synchronously rotates, and when the forceps head is used, the outer tube is arranged in the endoscope forceps channel, and the rotation of the outer tube easily causes scratch and abrasion of the endoscope forceps channel; (3) the water injection pipe has poor sealing performance of an external structure, and the water leakage phenomenon is easy to occur.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems that the sealing performance of the thermal biopsy forceps is poor and the water leakage phenomenon is easy to occur in the prior art, the utility model provides the water-injection electrothermal biopsy forceps to solve the problems.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a water injection electrothermal biopsy forceps comprises a forceps head structure, a connecting structure, a forceps head control structure, a spraying pipe assembly and an electrode plug electrically connected with the forceps head structure; the two ends of the connecting structure are respectively rotatably connected with the tong head structure and the tong head control structure, the spray pipe assembly comprises a water injection pipe connected with the connecting structure and a spray pipe extending out of the front end of the tong head structure, a water inlet of the spray pipe is positioned inside the connecting structure, and the spray pipe is communicated with the water injection pipe through an inner cavity of the connecting structure; the forceps head control structure is connected with the forceps head structure through the spraying pipe and drives the forceps head structure to rotate or drives the forceps head structure to clamp or loosen lesion tissues.

Furthermore, the tong head control structure comprises a core bar and a slip ring which is connected to the outside of the core bar in a sliding manner; the connecting structure is rotatably connected with the core rod; the slip ring is fixedly connected with the spray pipe.

Furthermore, the electrode clamp also comprises a transmission wire for connecting the electrode plug and the clamp head structure; the electrode plug is inserted into the electrode interface and is fixedly riveted with the transmission wire.

Furthermore, a boosting pipe is sleeved on the periphery of the transmission wire; a first sealing structure in sealing contact with the periphery of the spraying pipe is fixed at one end of the connecting structure, and a second sealing structure in sealing contact with the periphery of the boosting pipe is fixed at the other end of the connecting structure; the water injection pipe is positioned between the first sealing structure and the second sealing structure; the water inlet of the spray pipe is positioned between the first sealing structure and the water injection pipe.

Furthermore, the water injection pipe is formed by a tee joint sleeved on the periphery of the transmission wire, the connecting structure comprises a metal pipe, a heat-shrinkable pipe and a spring pipe, and the heat-shrinkable pipe is positioned on the periphery of the spring pipe and is fixed with the spring pipe in a heat-shrinkable manner; one end of the heat-shrinkable tube is rotatably connected with the tong head structure, the other end of the heat-shrinkable tube is inserted into one end of the metal tube, the other end of the metal tube is fixed with one axial end of the tee joint, and the other axial end of the tee joint is rotatably connected with the core bar; the water injection pipe is communicated with the spraying pipe through the inside of the spring pipe.

Furthermore, the periphery of the connecting structure is provided with an annular groove which is arranged close to the core bar and is recessed inwards in the radial direction, and the core bar is provided with a connecting sleeve sleeved on the periphery of the connecting structure; the connecting sleeve is provided with an axial clearance suitable for accommodating the arc gland; the inner circumference of the arc gland is clamped into the annular groove so as to axially fix the connecting structure; the periphery of arc gland and adapter sleeve still coats and has rotatory cap.

Furthermore, the tong head structure comprises a tong clamp which is connected with one end of the spray pipe and is driven by the spray pipe to clamp or close, and a tong head seat which is rotatably connected with the connecting structure; the clamp comprises two groups of connecting rod assemblies, each connecting rod assembly is formed by hinging two connecting rods, one connecting rod is hinged with the spraying pipe, and the other connecting rod is hinged with the clamp head seat and extends outwards to form a clamping jaw.

Further, a guide groove suitable for the sliding ring to reciprocate along the axial direction is formed in the core rod, and a guide rail is arranged in the guide groove; the sliding ring is sleeved on the periphery of the core rod, and the center of the sliding ring is provided with a guide post which is abutted against the surface of the guide rail and reciprocates along the guide rail.

Furthermore, the second sealing structure is a sealing plug which is abutted to the end part of the core rod, and a plurality of rows of barbs which are suitable for being inserted into the inner wall of the connecting structure are arranged on the periphery of the sealing plug.

Furthermore, one end of the forceps head seat is fixed with a rotating shaft which is clamped on the inner periphery of the fixing sleeve, the fixing sleeve is fixedly connected with the connecting structure, and the first sealing structure is located between the rotating shaft and the axial end face of the connecting structure.

The utility model has the beneficial effects that:

(1) according to the water injection electrothermal biopsy forceps, the water inlet of the spray pipe is moved to the inside of the connecting structure from the connecting part of the forceps head structure and the connecting structure, so that the position of the water inlet is moved to the front of the sealing part of the connecting structure and the forceps head structure, the water tightness of parts is improved, and water flow is effectively prevented from leaking from the periphery of the forceps head structure.

(2) According to the water injection electrothermal biopsy forceps, the core rod and the sliding ring in the forceps head control structure are used for controlling the rotation, closing and clamping actions of the forceps head structure, and the sliding ring controls the movement of the forceps head structure through the spraying pipe assembly, so that the synchronous movement of the spraying pipe and the forceps head structure can be ensured, and tissues can be clamped in time after hemostasis.

(3) According to the water injection electrothermal biopsy forceps, the connecting structure in the endoscope forceps channel is in a fixed state, so that the connecting structure can be effectively prevented from wearing the forceps channel of the endoscope.

(4) According to the water injection and electrothermal biopsy forceps, the heat shrinkage pipe and the spring pipe which are integrated into a whole are connected with the metal pipe through the heat shrinkage process in the connecting structure, and then the metal pipe is connected with the three-way ancient pier road, so that the sealing performance of the whole pipe is guaranteed.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a perspective view of an injectable water electrothermal biopsy forceps of the present invention;

FIG. 2 is a front view of the injectable water electrothermal biopsy forceps of the present invention;

FIG. 3 is a sectional view taken along line A-A of FIG. 2 (with a longitudinal portion thereof omitted);

FIG. 4 is an enlarged view taken at a point a in FIG. 3;

FIG. 5 is an enlarged view at d in FIG. 3;

FIG. 6 is an enlarged view at e of FIG. 3;

FIG. 7 is an enlarged view at f of FIG. 3;

FIG. 8 is a schematic view of the fit relationship between the arc-shaped gland and the connecting sleeve;

FIG. 9 is a sectional view taken along line B-B of FIG. 2;

fig. 10 is a sectional view taken along line C-C of fig. 2.

In the figure, 1, a tong head structure, 101, a clamp, 1011, a connecting rod, 1012, a clamping jaw, 102, a tong head seat, 2, a connecting structure, 201, a tee joint, 2011, an annular groove, 202, a metal pipe, 203, a heat shrink tube, 2031, an insertion section, 204, a spring pipe, 205, a sheathing pipe, 3, a tong head control structure, 301, a core bar, 3011, a connecting sleeve, 3012, a guide groove, 3013, a guide rail, 302, a sliding ring, 3021, an electrode interface, 3022, a guide post, 4, an electrode plug, 5, a driving wire, 6, a fixing sleeve, 601, a step, 7, a spray pipe, 701, a water inlet, 8, a fluid passage, 9, a barb, 10, a first hinge shaft, 11, a second hinge shaft, 12, a rotating shaft, 13, an arc gland, 14, a rotating cap, 15, a sealing plug, 16, a sealing ring, 17, a boosting pipe, 18, a gasket, 19, a reinforcing pipe, 20 and a water injection pipe.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

The utility model takes the direction close to the focus tissue as the front and the direction far away from the focus tissue as the back during the operation.

Example one

As shown in fig. 1-10, a can annotate water electrothermal biopsy forceps, including binding clip structure 1, connection structure 2, binding clip control structure 3, spray tube 7 subassembly and the electrode plug 4 of being connected with binding clip structure 1 electricity, connection structure 2's both ends rotate with binding clip structure 1 and binding clip control structure 3 respectively and are connected, binding clip structure 1 is used for pressing from both sides tightly or unclamping the focus tissue, spray tube 7 subassembly contains water injection pipe 20 of being connected with connection structure 2 and stretches out spray tube 7 of binding clip structure 1 front end, and the water inlet 701 of spray tube 7 is located connection structure 2's inside, and spray tube 7 communicates with water injection pipe 20 through connection structure 2's inside cavity.

The forceps head control structure 3 is connected with the forceps head structure 1 through the spray pipe 7 and drives the forceps head structure 1 to rotate, or drives the forceps head structure 1 to clamp or loosen lesion tissues; the connecting structure 2 is positioned at the periphery of the spray pipe 7 assembly and used for fixing the axial positions of the forceps head structure 1 and the forceps head control structure 3, and simultaneously, the middle part (namely the connecting structure 2) of the electrothermal biopsy forceps is always fixed in the process of contacting with a forceps channel of an endoscope, so that the forceps channel of the endoscope cannot be abraded.

The spray tube 7 assembly is used to introduce external water from the water injection tube 20 and spray out through the internal cavity of the connection structure 2 and the spray tube 7 to flush the tissue. The electrode plug 4 is connected with the electric cutting equipment, and the tong head structure 1 is electrified under the control of a switch of the electric cutting equipment. The water injection pipe 20 is connected on the fixed connection structure 2, and can keep the position of the water injection pipe 20 fixed, and avoid the winding of an external pipeline caused by the position change of the water injection pipe 20. The water inlet 701 of the spray pipe 7 in the conventional structure is transferred to the inside of the connection structure 2 from the front of the connection part of the binding clip structure 1 and the connection structure 2, in the conventional structure, water flow needs to pass through the connection part of the binding clip structure 1 and the connection structure 2 and then enters the water inlet 701, and water leakage may occur at the connection part, and the water flow in the present invention directly enters the water inlet 701 from the inside of the connection structure 2 (as shown in fig. 4), so that the leakage phenomenon is avoided.

Preferably, as shown in fig. 4, the water inlet 701 of the sprinkling pipe 7 can be sleeved with a reinforcing pipe 19, the reinforcing pipe 19 is also correspondingly provided with an opening communicated with the water inlet 701, and the reinforcing pipe 19 can improve the water impact strength which can be borne by the water inlet 701 of the sprinkling pipe 7, so as to realize rapid and powerful spraying of the outlet of the sprinkling pipe 7.

The working principle is as follows: firstly, the utility model enters the human body through the endoscope channel, one hand holds the connecting structure 2, the other hand rotates the forceps head control structure 3, thereby driving the forceps head structure 1 to rotate and enabling the forceps head structure 1 to be in the correct clamping position. And then adjusting the forceps head control structure 3 to open the forceps head structure 1, washing the position right opposite to the forceps head structure 1 by the spray pipe 7 assembly, clearly seeing the tissue structure after washing, and adjusting the forceps head control structure 3 to close the forceps head structure 1 and clamp the tissue.

The tong head structure 1 can adopt the following structure: the tong head structure 1 comprises a tong head seat 102 and a tong head clamp 101, wherein the tong head seat 101 is connected with one end of a spray pipe 7 and is driven by the spray pipe 7 to clamp or close; the clamp 101 comprises two sets of connecting rods 1011, the connecting rods 1011 are hinged by two connecting rods 1011, one of the connecting rods 1011 is hinged with the spray pipe 7, and the other connecting rod 1011 is hinged with the clamp head seat 102 and extends outwards to form a clamping jaw 1012.

As shown in fig. 9, the middle portions of the two front connecting rods 1011 are hinged to the first hinge shaft 10 together with the forceps head seat 102, and the front ends of the two connecting rods 1011 form the clamping jaws 1012, the two rear connecting rods 1011 are hinged to the second hinge shaft 11 together with the spraying tube 7, and the two connecting rods 1011 in the same group of connecting rod 1011 are hinged to each other, when the forceps head control structure 3 drives the spraying tube 7 to move axially, the spraying tube 7 drives the two rear connecting rods 1011 to approach or move away from the first hinge shaft 10 through the second hinge shaft 11, so as to open or close the two clamping jaws 1012, because the spraying tube 7 is connected to the two rear connecting rods 1011, when the spraying tube 7 extends forwards, the two clamping jaws 1012 can be opened, the spraying tube 7 cleans the lesion tissue, and when the spraying tube 7 retracts backwards, the two clamping jaws 1012 are closed to clamp the lesion tissue.

The electrode plug 4 can be arranged on the connecting structure 2 or on the tong head control structure 3, and the electrode plug 4 is usually electrically connected with the tong head structure 1 through a driving wire 5 positioned in the electric heating biopsy forceps because a certain distance is reserved between the electrode plug 4 and the tong head structure 1.

The tong head control structure 3 can adopt the following structure: the tong head control structure 3 comprises a core bar 301 and a slip ring 302 connected to the outside of the core bar 301 in a sliding manner; the connecting structure 2 is rotatably connected with the core rod 301; the slip ring 302 is fixedly connected to the spray tube 7. The slip ring 302 is in sliding connection with the core rod 301, the slip ring 302 can axially reciprocate relative to the core rod 301, when the clamp is used, one hand holds the connecting structure 2, the other hand rotates or moves the slip ring 302, and when the slip ring 302 rotates, the clamp head control structure 3 integrally rotates, so that the spray pipe 7 drives the clamp head structure 1 to rotate; when the sliding ring 302 is moved axially, the core rod 301 is fixed, and the sliding ring 302 drives the spray pipe 7 to extend and contract and the jaw structure 1 to open or clamp.

Specific sliding connection structure 2 of core rod 301 and slip ring 302: the core bar 301 is provided with a guide groove 3012 suitable for the slip ring 302 to reciprocate along the axial direction, and a guide rail 3013 is arranged in the guide groove 3012; the slip ring 302 is sleeved on the periphery of the core rod 301, and the center of the slip ring 302 is provided with a guide post 3022 which is abutted against the surface of the guide rail 3013 and reciprocates along the guide rail 3013. As shown in fig. 1 and 2, the guide slot 3012 penetrates in the vertical direction, the slip ring 302 has a central hole for the core rod 301 to pass through in the front-back direction, as shown in fig. 10, the guide post 3022 is fixed in the central hole, the inner wall of the central hole contacts with the outer side wall of the core rod 301, the guide post 3022 is tightly attached to the inner wall of the core rod 301, the slip ring 302 is tightly fitted with the core rod 301 by the cooperation of the guide post 3022 and the inner wall of the central hole with the core rod 301, and the slip ring 302 is prevented from shaking left and right. The guide rail 3013 supports the bottom of the guide post 3022 to serve as a base of the guide post 3022, so that the guide post can move forward and backward more stably.

The connecting structure 2 is rotatably connected with the core rod 301: the periphery of the connecting structure 2 is provided with an annular groove 2011 which is arranged close to the core rod 301 and is recessed inwards in the radial direction, and the core rod 301 is provided with a connecting sleeve 3011 which is sleeved on the periphery of the connecting structure 2; the connecting sleeve 3011 has an axial gap suitable for accommodating the arc gland 13; the inner circumference of the arc-shaped gland 13 is clamped into the annular groove 2011 so that the connecting structure 2 is axially fixed; the arc-shaped gland 13 and the connecting sleeve 3011 are also covered with a rotating cap 14. As shown in fig. 5 and 8, the connection sleeve 3011 is sleeved on the end of the connecting structure 2 and extends to the annular groove 2011, the connection sleeve 3011 is in contact with the outer wall of the connecting structure 2, can rotate relative to the connecting structure 2, the top of the connecting sleeve 3011 is provided with an axially through opening, the arc gland 13 is filled in the opening, the inner circumference of the arc gland 13 is clamped in the annular groove 2011, the end face of the annular groove 2011 is abutted, one end of the periphery of the arc gland 13 is abutted against the connecting sleeve 3011, the connecting sleeve 3011 and the annular groove 2011 are abutted against the front end face and the rear end face of the arc gland 13 respectively (the arc gland 13 is axially abutted against the annular groove 2011 in figure 5, the arc gland 13 is axially abutted against the connecting sleeve 3011 in figure 8), so that the connecting structure 2 and the core rod 301 are axially fixed by the arc-shaped gland 13, the front end face is the end face facing forward, the rear end face means that the end face faces rearward, but the front-rear positional relationship between the front end face and the rear end face is not limited. Meanwhile, the arc-shaped gland 13 and the connecting sleeve 3011 jointly form an annular sleeve body, so the arc-shaped gland 13 can synchronously rotate with the connecting sleeve 3011 (namely, the core rod 301), and the annular structure of the annular groove 2011 is arranged to enable the arc-shaped gland 13 to be clamped on the annular groove 2011 all the time when rotating relative to the connecting structure 2. The rotating cap 14 is used for wrapping the connecting sleeve 3011 and the arc-shaped pressing cover 13, and the structural integrity and the sealing performance are guaranteed.

The connection structure 2 may be an integrated tubular structure, and the inside of the connection structure 2 may accommodate the driving wire 5, the spray pipe 7, etc., while the inside of the connection structure 2 serves as the fluid passage 8 between the water injection pipe 20 and the spray pipe 7.

Example two

In the above embodiment, there is no direct connection between the driving wire 5 and the spray tube 7, the sliding ring 302 needs to be rigidly connected to the spray tube 7 through other structures, and at this time, the inner diameter of the connecting structure 2 needs to be correspondingly increased to avoid crowding of the internal structure and influence on fluid circulation, and in order to reduce the radial dimension of the electrothermal biopsy forceps, the driving wire 5 is directly connected between the spray tube 7 and the sliding ring 302 in the present embodiment, and the following structural improvements are made: as shown in fig. 2, the slip ring 302 is provided with an electrode interface 3021, the electrode plug 4 is provided with a rivet hole suitable for the driving wire 5 to pass through, and the electrode plug 4 is inserted into the electrode interface 3021 and fixed with the driving wire 5 by riveting. The aperture of riveting hole is greater than the diameter of driving silk 5, after driving silk 5 passed the riveting hole, presses 4 tops of electrode plug through the press and can make the riveting hole warp to press from both sides tightly driving silk 5. The riveting fixing mode is very firm, and the phenomenon that the transmission wire 5 falls off cannot occur.

EXAMPLE III

The water injection pipe 20 is located on the connection structure 2, and the water tightness of the whole electric heating biopsy forceps is ensured by the sealing arrangement of the connection part of the connection structure 2, the connection structure 2 and the forceps head structure 1 and the connection part of the connection structure 2 and the forceps head control structure 3 respectively in the embodiment.

The connection structure 2:

the water injection pipe 20 is formed by a tee joint 201 sleeved on the periphery of the transmission wire 5, the connecting structure 2 comprises a metal pipe 202, a heat-shrinkable pipe 203 and a spring pipe 204, and the heat-shrinkable pipe 203 is positioned on the periphery of the spring pipe 204 and is fixed with the spring pipe 204 in a heat-shrinkable manner; one end of the heat shrinkable tube 203 is rotatably connected with the forceps head structure 1 (as shown in fig. 4), the other end of the heat shrinkable tube 203 is inserted into one end of the metal tube 202, the other end of the metal tube 202 is fixed with one axial end of the tee joint 201, and the other axial end of the tee joint 201 is rotatably connected with the core bar 301; the water injection pipe 20 communicates with the spray pipe 7 through the inside of the spring tube 204.

As shown in fig. 3 and 7, the water injection pipe 20 is a vertical channel perpendicular to two axial channels of the tee 201, and the metal pipe 202 and the tee 201 are co-injected, so that the water tightness of the connection between the metal pipe 202 and the tee 201 is ensured, and no water leakage occurs when liquid passes through. As shown in fig. 6 and 7, the heat shrinkable tube 203 and the spring tube 204 are fixed by a heat shrinking process to ensure the water tightness of the tubes; the rear end of the heat shrinkable tube 203 after heat shrinkage is scraped to form an insertion section 2031 for insertion into the metal tube 202, the rear end of the spring tube 204 is also inserted into the metal tube 202, and the front half section of the metal tube 202 is roughened, so that stable connection and water tightness between the heat shrinkable tube 203 and the metal tube 202 are ensured.

Preferably, as shown in fig. 3 and 6, a sheath tube 205 may be further fixed to one end of the tee 201 connected to the metal tube 202, and the sheath tube 205 is connected to the outer circumference of the tee 201 to protect the connection portion of the heat shrinkable tube 203 and the tee 201.

The leakproofness setting of the connection position of connection structure 2 and binding clip structure 1, connection structure 2 and binding clip control structure 3:

a boosting pipe 17 is sleeved on the periphery of the transmission wire 5; a first sealing structure which is in sealing contact with the periphery of the spray pipe 7 is fixed at one end of the connecting structure 2, and a second sealing structure which is in sealing contact with the periphery of the boosting pipe 17 is fixed at the other end of the connecting structure 2; the water injection pipe 20 is located between the first sealing structure and the second sealing structure; the water inlet 701 of the spray pipe 7 is located between the first sealing structure and the water filling pipe 20. After liquid enters the connecting structure 2 from the water injection pipe 20, a first sealing structure blocks the fluid in front of the connecting structure 2, and a second sealing structure blocks the fluid in back of the connecting structure 2, so that the fluid flows in the connecting structure 2 completely and is finally sprayed out from the outlet of the spray pipe 7, and the fluid leakage phenomenon is avoided. The booster tube 17 may increase the strength of the drive wire 5 and may thicken the drive wire 5 to facilitate a sealed connection with the second seal structure.

The second sealing structure is a sealing plug 15 abutting against the end of the core rod 301, and the periphery of the sealing plug 15 is provided with a plurality of rows of barbs 9 suitable for being inserted into the inner wall of the connecting structure 2. As shown in fig. 5, the sealing plug 15 is located inside the tee joint 201, and is in contact with the tee joint 201 through an axial stepped circumferential surface, the rear end of the sealing plug 15 abuts against the end surface of the core rod 301, the front end of the sealing plug 15 abuts against the inner end surface of the tee joint 201, under the clamping action of the arc-shaped gland 13 and the annular groove 2011, the sealing plug 15 is tightly pressed between the tee joint 201 and the core rod 301, the inner periphery of the sealing plug 15 is in contact with the boosting pipe 17, and water proofing is realized through the abutment of the inner wall and the outer wall of the sealing plug 15; meanwhile, the front part of the sealing plug 15 is provided with a barb 9 which is clamped with the inner wall of the tee joint 201, so that the fixing strength is further improved.

The connection structure 2 is connected with the tong head structure 1:

one end of the forceps head seat 102 is fixed with a rotating shaft 12, the rotating shaft 12 is clamped on the inner periphery of the fixing sleeve 6, the fixing sleeve 6 is fixedly connected with the connecting structure 2, and the first sealing structure is located between the rotating shaft 12 and the axial end face of the connecting structure 2. As shown in fig. 4, the first sealing structure is composed of a sealing ring 16 and a gasket 18, the sealing ring 16 abuts against the front ends of the heat shrinkable tube 203 and the spring tube 204, which are heat shrinkable together, and is fixed with the heat shrinkable tube 203, the gasket 18 is fixed with the sealing ring 16, the inner periphery of the fixing sleeve 6 is provided with two steps 601 (as shown in fig. 9), one step 601 is clamped on the front end surface of the gasket 18, the other step 601 is clamped on the front end surface of the rotating shaft 12, and the rear end of the fixing sleeve 6 is fixed with the heat shrinkable tube 203, so that the heat shrinkable tube 203 is axially fixed with the first sealing structure and the forceps head structure 1, and the fixing sleeve 6 rotates around the rotating shaft 12. The connection of the fixing sleeve 6 and the heat shrinkable tube 203 can also adopt a barb 9 for clamping.

In the description of the present invention, it is to be understood that the terms "center", "front", "rear", "left", "right", "inner", "outer", "axial", "radial", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced device or element 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," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, e.g. as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In this specification, the schematic representations of the terms are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. The utility model provides a can annotate water electrothermal biopsy forceps which characterized in that: the electrode clamp comprises a clamp head structure (1), a connecting structure (2), a clamp head control structure (3), a spray pipe (7) assembly and an electrode plug (4) electrically connected with the clamp head structure (1);

the two ends of the connecting structure (2) are respectively rotatably connected with the tong head structure (1) and the tong head control structure (3), the spray pipe (7) assembly comprises a water injection pipe (20) connected with the connecting structure (2) and a spray pipe (7) extending out of the front end of the tong head structure (1), a water inlet (701) of the spray pipe (7) is positioned inside the connecting structure (2), and the spray pipe (7) is communicated with the water injection pipe (20) through an inner cavity of the connecting structure (2);

the forceps head control structure (3) is connected with the forceps head structure (1) through the spray pipe (7) and drives the forceps head structure (1) to rotate or drives the forceps head structure (1) to clamp or loosen lesion tissues.

2. The injectable hydroelectric and electrothermal biopsy forceps of claim 1, wherein: the tong head control structure (3) comprises a core bar (301) and a sliding ring (302) which is connected to the outside of the core bar (301) in a sliding manner; the connecting structure (2) is rotationally connected with the core rod (301); the slip ring (302) is fixedly connected with the spraying pipe (7).

3. The injectable hydroelectric and electrothermal biopsy forceps of claim 2, wherein: the electrode clamp also comprises a transmission wire (5) for connecting the electrode plug (4) and the clamp head structure (1);

an electrode interface (3021) is arranged on the slip ring (302), one end of the transmission wire (5) is fixedly connected with the spray pipe (7), a riveting hole suitable for the transmission wire (5) to penetrate through is formed in the electrode plug (4), and the electrode plug (4) is inserted into the electrode interface (3021) and is fixedly riveted with the transmission wire (5).

4. The injectable hydroelectric and electrothermal biopsy forceps of claim 3, wherein: a boosting pipe (7) is sleeved on the periphery of the transmission wire (5);

a first sealing structure in sealing contact with the periphery of the spraying pipe (7) is fixed at one end of the connecting structure (2), and a second sealing structure in sealing contact with the periphery of the boosting pipe (7) is fixed at the other end of the connecting structure (2);

the water injection pipe (20) is located between the first and second sealing structures; the water inlet (701) of the spray pipe (7) is positioned between the first sealing structure and the water injection pipe (20).

5. The injectable hydroelectric and electrothermal biopsy forceps of claim 3, wherein: the water injection pipe (20) is formed by a tee joint (201) sleeved on the periphery of the transmission wire (5), the connecting structure (2) comprises a metal pipe (202), a heat-shrinkable pipe (203) and a spring pipe (204), and the heat-shrinkable pipe (203) is located on the periphery of the spring pipe (204) and is fixed with the spring pipe (204) in a heat-shrinkable mode;

one end of the heat shrinkable tube (203) is rotatably connected with the tong head structure (1), the other end of the heat shrinkable tube (203) is inserted into one end of the metal tube (202), the other end of the metal tube (202) is fixed with one axial end of the tee joint (201), and the other axial end of the tee joint (201) is rotatably connected with the core bar (301);

the water injection pipe (20) is communicated with the spraying pipe (7) through the inside of the spring pipe (204).

6. The injectable hydroelectric and electrothermal biopsy forceps of claim 2, wherein: the periphery of the connecting structure (2) is provided with an annular groove (2011) which is arranged close to the core rod (301) and is recessed inwards in the radial direction, and the core rod (301) is provided with a connecting sleeve (3011) sleeved on the periphery of the connecting structure (2);

the connecting sleeve (3011) is provided with an axial gap suitable for accommodating the arc gland (13); the inner circumference of the arc-shaped gland (13) is clamped into the annular groove (2011) so as to axially fix the connecting structure (2); the peripheries of the arc-shaped gland (13) and the connecting sleeve (3011) are further coated with a rotating cap (14).

7. The injectable hydroelectric and electrothermal biopsy forceps of claim 4, wherein: the tong head structure (1) comprises a tong head seat (102) and a tong head clamp (101), wherein the tong head seat is connected with one end of the spraying pipe (7) and is driven by the spraying pipe (7) to clamp or close, and the tong head seat is rotatably connected with the connecting structure (2);

the clamp (101) comprises two groups of connecting rod (1011) assemblies, each connecting rod (1011) assembly is formed by hinging two connecting rods (1011), one connecting rod (1011) is hinged with the spray pipe (7), and the other connecting rod (1011) is hinged with the clamp head seat (102) and extends outwards to form a clamping jaw (1012).

8. The injectable hydroelectric and electrothermal biopsy forceps of claim 2, wherein: the core bar (301) is provided with a guide groove (3012) suitable for the sliding ring (302) to reciprocate along the axial direction, and a guide rail (3013) is arranged in the guide groove (3012);

the slip ring (302) is sleeved on the periphery of the core rod (301), and the center of the slip ring (302) is provided with a guide post (3022) which is abutted against the surface of the guide rail (3013) and reciprocates along the guide rail (3013).

9. The injectable hydroelectric and electrothermal biopsy forceps of claim 4, wherein: the second sealing structure is a sealing plug (15) abutted to the end part of the core rod (301), and a plurality of rows of barbs (9) suitable for being inserted into the inner wall of the connecting structure (2) are arranged on the periphery of the sealing plug (15).

10. The injectable hydroelectric and electrothermal biopsy forceps of claim 7, wherein: one end of the pliers head seat (102) is fixed with a rotating shaft (12), the rotating shaft (12) is clamped on the inner periphery of the fixed sleeve (6), the fixed sleeve (6) is fixedly connected with the connecting structure (2), and the first sealing structure is located between the rotating shaft (12) and the axial end face of the connecting structure (2).

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