CN210494135U

CN210494135U - Thermal biopsy forceps

Info

Publication number: CN210494135U
Application number: CN201920811611.2U
Authority: CN
Inventors: 叶丽萍; 杨凯来; 韩敬全
Original assignee: Jiangsu Ruitian Medical Technology Co Ltd
Current assignee: Jiangsu Ruitian Medical Technology Co Ltd
Priority date: 2019-05-28
Filing date: 2019-05-28
Publication date: 2020-05-12
Anticipated expiration: 2029-05-28

Abstract

The utility model discloses a hot biopsy forceps, include: the clamp head structure, the clamp head control structure connected with the clamp head structure and the handle structure; the forceps head structure comprises two forceps heads which are suitable for opening and/or closing to clamp and/or release tissues, and a forceps base which is connected with the two forceps heads through a pin shaft; the forceps head control structure comprises a pull rod connected with the tail parts of the two forceps heads, a transmission wire with one end connected with the pull rod, and a movable handle connected with the other end of the transmission wire; an electrode joint is further arranged on the movable handle, one end of the electrode joint is positioned on the movable handle and far away from the outside of the transmission wire, and the other end of the electrode joint penetrates through the movable handle and then is fixedly connected with the boosting tube. The binding clip structure through setting can realize its rotation through the pot head of operation movable handle front end for adopt the utility model discloses a hot biopsy forceps can improve the efficiency of blood coagulation and cutting operation through the rotation at the in-process that uses.

Description

Thermal biopsy forceps

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a hot biopsy forceps.

Background

The endoscopic biopsy technology is a minimally invasive diagnosis and treatment technology finished by an endoscopic working channel, and belongs to the advanced endoscopic technology. The hot biopsy forceps in the endoscopic biopsy technology need to be connected with electrode equipment, so that the forceps head is electrified to electrically cut cell tissues, the cutting process is rapid, and bleeding is less. In the prior art, the clamp head does not rotate during operation, and the opened clamp head usually covers the sight. In order to better clamp human tissues, the used thermal biopsy forceps need to adjust the opening and closing of the forceps heads so as to facilitate operations such as coagulation or cutting, and the positions of the forceps heads relative to the human tissues need to be adjusted.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hot biopsy forceps to solve the technical problem of being convenient for carry out the rotation to the binding clip in hot biopsy forceps use.

The utility model discloses a hot biopsy forceps is realized like this:

a binding clip structure, comprising: the clamp head structure, the clamp head control structure and the handle structure are connected with the clamp head structure;

the forceps head structure comprises two forceps heads which are suitable for opening and/or closing to clamp and/or release tissues, and a forceps base which is connected with the two forceps heads through a pin shaft; the clamp seat comprises an upper clamp frame fixedly connected with the pin shaft, a connecting frame fixedly connected with the upper clamp frame, and a lower clamp frame rotationally connected with the connecting frame; the handle structure is connected with the lower clamp frame;

the tong head control structure is connected with the two tong heads of the tong head structure; the forceps head control structure comprises a pull rod connected with the tail parts of the two forceps heads, a transmission wire with one end connected with the pull rod, and a movable handle connected with the other end of the transmission wire; the movable handle is also provided with an electrode joint, one end of the electrode joint is positioned on the movable handle and far away from the outside of the transmission wire, and the other end of the electrode joint penetrates through the movable handle and is fixedly connected with the transmission wire;

the upper clamp frame comprises a base part connected with the connecting frame and a pair of symmetrically arranged wing wings integrally connected with the base part, and the wing wings are arranged away from the connecting part; a containing space suitable for containing the two tong heads is formed between the pair of wings;

and through holes suitable for the transmission wires to pass through are arranged in the inner cavities of the connecting frame, the lower clamp frame and the base part in a penetrating manner.

In a preferred embodiment of the present invention, insertion holes suitable for pin shaft perforation are symmetrically formed in a pair of portions of the wings away from the base.

In a preferred embodiment of the present invention, the base portion includes a small inner diameter portion connected to the pair of wings, and a large inner diameter portion integrally formed with the small inner diameter portion; an L-shaped step part is formed at the boundary of the large inner diameter part and the small inner diameter part; and

the inner diameter of the through hole of the large inner diameter part is larger than that of the through hole of the small inner diameter part;

the inner diameter of the through hole of the small inner diameter part is the same as that of the connecting frame.

In the preferred embodiment of the present invention, the large inner diameter portion is suitable for being sleeved on the outer sidewall of the connecting frame, and after the large inner diameter portion is sleeved with the connecting frame, the end portion of the connecting frame facing the upper clamp frame is suitable for abutting against the L-shaped step portion.

In a preferred embodiment of the present invention, after the large inner diameter portion is sleeved with the connecting frame, the large inner diameter portion is adapted to be riveted with the connecting frame.

In a preferred embodiment of the present invention, the connecting frame has a protruding step of a ring structure facing the outer side wall of the end of the lower clamp frame;

after the large inner diameter part is sleeved with the connecting frame, the convex step is suitable for forming an annular groove which is concave relative to the outer side wall of the large inner diameter part with the end part of the large inner diameter part facing the lower clamp frame; and

the inner side wall of the end part of the lower clamp frame connected with the connecting frame is provided with a convex ring which is of an annular structure and is suitable for being connected with the annular groove in an inserting way; the annular groove is suitable for driving the connecting frame to rotate around the radial direction of the convex ring.

In a preferred embodiment of the present invention, the handle structure includes an outer spring tube fixedly connected to the lower vise frame, a core bar having one end connected to the outer spring tube, and a bracelet connected to the other end of the core bar; the transmission wire penetrates through the spring outer tube and the core rod; the movable handle is sleeved outside the core rod; the movable handle is suitable for reciprocating sliding along the length direction of the core rod, and the movable handle is also suitable for rotating along the radial direction of the core rod.

In a preferred embodiment of the present invention, the thermal biopsy forceps further comprises a power assembly adapted to drive the drive wire to rotate radially;

the power assembly comprises an end sleeve and a connecting sleeve, wherein one end of the end sleeve is rotatably connected with one end of the core rod, which faces the spring outer pipe, and the connecting sleeve is rotatably matched with the other end of the end sleeve; the transmission wire is suitable for simultaneously penetrating through the end sleeve and the connecting sleeve, and a boosting pipe is integrally formed at the part of the transmission wire penetrating through the end sleeve and the connecting sleeve; and

be equipped with in the end sleeve be used for with the fixed joint piece of boosting pipe joint, drive joint piece linkage boosting pipe in the radial rotatory in-process of end sleeve promptly and realize radial rotation.

In a preferred embodiment of the present invention, at least one protruding circular caulking groove is formed on the inner cavity wall of the end portion of the end sleeve connected with the core rod along the radial direction of the end sleeve; and

at least one raised circular boss is arranged on the outer side wall of the end part of the core rod connected with the end sleeve along the radial direction of the end sleeve;

the connecting sleeve is fixedly connected with the outer spring tube.

By adopting the technical scheme, the utility model discloses following beneficial effect has: the utility model discloses a hot biopsy forceps, the binding clip structure through setting up can realize its rotation through movable handle's operation, make and adopt the utility model discloses a hot biopsy forceps can improve the efficiency of operation through the rotation at the in-process of operation. And just to the utility model discloses a binding clip structure, because the pincers base include with round pin axle fixed connection's last tong holder, with go up the link that the tong holder linked firmly, and with the link rotates the lower tong holder that links to each other, wherein lower tong holder is used for linking to each other with the spring outer tube, when the position of two tong heads needs to be adjusted through the rotation, the rotation of two tong heads is realized to the rotary action through the driving wire, when the rotatory in-process of two tong heads, the last tong holder that links to each other with the tong head and link rotate for lower tong holder, at this in-process, lower tong holder can keep with the relative position's of bracelet stable, promptly above-mentioned whole in-process, the flexibility of holistic tong head operation is higher, the efficiency that such heat biopsy pincers used also obtains improving.

Drawings

FIG. 1 is a schematic structural view of the thermal biopsy forceps of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a schematic view of the overall three-dimensional structure of the clamp base of the thermal biopsy forceps of the present invention;

FIG. 4 is a schematic view of the overall cross-sectional structure of the holder of the thermal biopsy forceps of the present invention;

FIG. 5 is a schematic structural view of an upper frame of the thermal biopsy forceps of the present invention;

FIG. 6 is a schematic structural view of the upper frame and the connecting frame of the thermal biopsy forceps of the present invention;

FIG. 7 is a schematic structural view of the lower frame and the connecting frame of the thermal biopsy forceps of the present invention;

FIG. 8 is a schematic view of the partial cross-sectional structure of FIG. 1;

FIG. 9 is a schematic structural view of the end of the thermal biopsy forceps of the present invention where the core bar is connected to the end sleeve;

fig. 10 is a schematic structural view of the end sleeve of the thermal biopsy forceps of the present invention.

In the figure: the clamp comprises a clamp head 1, a pin shaft 2, an upper clamp frame 3, a connecting frame 4, a lower clamp frame 5, a wing 6, a containing section 7, an inserting hole 8, a small inner diameter portion 9, a large inner diameter portion 10, an L-shaped step portion 11, a convex step 12, an annular groove 13, a convex ring 14, a transmission wire 16, a movable handle 17, a core rod 18, a bracelet 19, a spring outer tube 20, an electrode connector 22, a fixed block 25, a power connector 27, an end sleeve 31, a connecting sleeve 32, a boosting tube 33, a clamping block 35, a clamping port 36, a circular ring caulking groove 37 and a circular ring boss 38.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.

Referring to fig. 1 to 10, the present embodiment provides a thermal biopsy forceps, and specifically, the thermal biopsy forceps of the present embodiment includes: the pliers head structure, the pliers head control structure and the handle structure are connected with the pliers head structure.

In particular, the forceps head structure comprises two forceps heads 1 which are suitable for opening and/or closing to clamp and/or release tissues, and a forceps base which is connected with the two forceps heads 1 through a pin shaft 2. During the opening and/or closing of the two pliers heads 1, the two pliers heads 1 rotate around the pin shaft 2.

The clamp seat comprises an upper clamp frame 3 fixedly connected with the pin shaft 2, a connecting frame 4 fixedly connected with the upper clamp frame 3, and a lower clamp frame 5 rotatably connected with the connecting frame 4; the handle structure is connected with the lower jaw frame 5.

The jaw control structure comprises a pull rod (here the pull rod is not conventional in the art and is not shown) connected to the tail of the two jaws 1, a drive wire 16 connected to the pull rod at one end, and a movable handle 17 connected to the other end of the drive wire 16. The movable handle 17 is further provided with an electrode connector 22, one end of the electrode connector 22 is located on the movable handle 17 and away from the outside of the driving wire 16, and the other end of the electrode connector 22 penetrates through the movable handle 17 and then is fixedly connected with the driving wire 16 through a fixing block 25. The electrode connector 22 is provided with a power connector 27 for connecting the electric cutting device, wherein the electrode connector 22 is connected with the electric cutting device during the operation of the thermal biopsy forceps, and the driving wire 16 and the forceps head 1 can be electrified through the switch control of the electric cutting device.

The upper clamp frame 3 comprises a base part connected with the connecting frame 4 and a pair of symmetrically arranged wings 6 integrally connected with the base part, and the wings 6 are arranged away from the connecting part; an accommodating area 7 suitable for accommodating the two tong heads 1 is formed between the pair of wings 6; the inner cavities of the connecting frame 4, the lower clamp frame and the base part are provided with through holes 21 suitable for the transmission wires 16 to pass through.

In order to facilitate the fixed connection of the upper clamp frame 3 and the pin shaft 2, insertion holes 8 suitable for the through holes of the pin shaft 2 are symmetrically formed in the parts, far away from the base, of the pair of wings 6, and the pin shaft 2 is fixedly connected with the upper clamp frame 3 through the matching of the pin shaft 2 and the insertion holes 8.

More specifically, the base portion includes a small inner diameter portion 9 connected to the pair of wings 6, and a large inner diameter portion 10 integrally formed with the small inner diameter portion 9; an L-shaped step part 11 is formed at the boundary of the large inner diameter part 10 and the small inner diameter part; and the inner diameter of the bore of the large inner diameter portion 10 is larger than that of the small inner diameter portion; the inner diameter of the through hole of the small inner diameter portion 9 is the same as that of the connecting frame 4, and the through hole of the small inner diameter portion 9 and the through hole of the connecting frame 4 are both suitable for the transmission wire 16 to pass through.

The large inner diameter portion 10 is adapted to be sleeved on an outer side wall of the connecting frame 4, and after the large inner diameter portion 10 is sleeved with the connecting frame 4, an end portion of the connecting frame 4 facing the upper clamp 3 is adapted to abut against the L-shaped step portion 11. In an optional embodiment, after the large inner diameter portion 10 is sleeved with the connecting frame 4, the large inner diameter portion 10 is suitable for being riveted with the connecting frame 4, but other fixing connection manners may also be used, for example, a threaded connection manner, that is, as long as the fixing connection between the large inner diameter portion 10 and the outer side wall of the connecting frame 4 is convenient, the use requirement of the embodiment is met.

The outer side wall of the end part of the connecting frame 4 facing the lower clamp frame is provided with a convex step 12 with an annular structure; after the large inner diameter part 10 is sleeved with the connecting frame 4, the convex step 12 is suitable for forming an annular groove 13 which is concave relative to the outer side wall of the large inner diameter part 10 with the end part of the large inner diameter part 10 facing the lower clamp frame; the inner side wall of the end part of the lower clamp frame connected with the connecting frame 4 is provided with a convex ring 14 which is in a ring structure and is convex and suitable for being connected with the ring groove 13 in an inserting way; the annular groove 13 is adapted to bring about a radial rotation of the connecting frame 4 around the collar 14. Here, the connection frame 4 can rotate relative to the lower jaw frame through the rotation fit relation of the convex ring 14 and the annular groove 13, when the transmission screw 16 is rotated through the movable handle 17, the transmission screw 16 can form rotation power for the two jaw heads 1, when the two jaw heads 1 rotate, under the transmission effect of the pin shafts 2 connected with the two jaw heads 1, the upper jaw frame 3 and the connection frame 4 rotate synchronously, and at the moment, due to the rotation fit relation between the connection frame 4 and the lower jaw frame, the lower jaw frame cannot form resistance to the rotation of the connection frame 4 and the upper jaw frame 3.

In addition, the handle structure adopted in this embodiment includes an outer spring tube 20 fixedly connected to the lower vise frame, a core bar 18 having one end connected to the outer spring tube 20, and a bracelet 19 connected to the other end of the core bar 18; the driving wire 16 penetrates through the spring outer tube 20 and the core rod 18; the movable handle 17 is sleeved on the outer side of the core rod 18; adapted to slide back and forth along the length of the core pin 18.

The specific implementation principle of the jaw control structure and the handle structure of the present embodiment adopts any implementation manner in the prior art to meet the use requirement of the present embodiment.

It should be noted that, for the thermal biopsy forceps of the present embodiment, when the positions of the two forceps heads need to be adjusted by rotation, specifically, the rotation of the two forceps heads is realized by the rotation action of the driving wire 16, and therefore, the thermal biopsy forceps of the present embodiment further includes a power assembly adapted to drive the driving wire 16 to rotate radially.

In detail, the power assembly comprises an end sleeve 31 with one end rotatably connected with one end of the core bar 18 facing the outer tube of the spring, and a connecting sleeve 32 rotatably matched with the other end of the end sleeve 31; the driving wire 16 is adapted to simultaneously penetrate the end sleeve 31 and the connecting sleeve 32, and an assisting tube 33 is integrally formed at a portion of the driving wire 16 penetrating the end sleeve 31 and the connecting sleeve 32, where the assisting tube 33 may be integrally formed on the driving wire 16 by cold stamping, and the assisting tube 33 may also extend to the movable handle 17, in which case, the electrode connector 22 is fixedly connected with the assisting tube 33 through a fixing block 25 after penetrating the movable handle 17. In addition, the connecting sleeve 32 and the end sleeve 31 each have a hollow inner cavity, and both ends of the connecting sleeve 32 and the end sleeve 31 are open structures penetrating the hollow inner cavity along the extending direction of the core rod 18, which is to facilitate the transmission wire 16 formed with the boosting pipe 33 to smoothly pass through the end sleeve 31 and the connecting sleeve 32. And, be equipped with in end cover 31 and be used for the joint piece 35 fixed with the boosting pipe 33 joint, joint piece 35 is fixed with the chamber wall of the cavity inner chamber of end cover 31, make joint piece 35 can realize synchronous rotation along with the rotation of end cover 31, set up the joint mouth 36 that is suitable for with boosting pipe 33 interference grafting on joint piece 35, make the rotation of joint piece 35 can drive boosting pipe 33's rotation, boosting pipe 33 at this moment can select the boosting pipe 33 that adopts the flat structure, the cylinder structure is compared to the flat structure, be difficult for producing relative rotation between boosting pipe 33 and joint mouth 36, so, the cooperation of realizing driving clamping piece 35 and boosting pipe 33 in the radial rotatory in-process of end cover 31 and realizing the radial rotation of driving wire 16 by end cover 31, joint piece 35 and boosting pipe 33.

In an alternative embodiment, for example, at least one raised circular caulking groove 37 is arranged on the inner cavity wall of the end part of the end sleeve 31 connected with the core rod 18 along the radial direction of the end sleeve 31, and the circular caulking groove 37 can be two to three circular caulking grooves 37 arranged at intervals; and the outer side wall of the end part of the core rod 18 connected with the end sleeve 31 is provided with at least one raised circular boss 38 along the radial direction of the end sleeve 31, the circular boss 38 can be two to three circular bosses 38 arranged at intervals, the circular boss 38 is connected with the circular caulking groove 37 in a matching way, and the end sleeve 31 can realize the effect that the end sleeve 31 can radially rotate relative to the core rod 18 and is not easy to fall off after the end part of the end sleeve 31 and the core rod 18 facing the end sleeve 31 is matched by the circular caulking groove 37 and the circular boss 38. In addition, the connection sleeve 32 is fixedly connected with the outer spring tube by, for example and without limitation, welding, and for the rotating fit relationship between the connection sleeve 32 and the end sleeve 31, a fit structure between, for example and without limitation, the core rod 18 and the end sleeve 31 may be adopted, and details of this embodiment are not repeated.

In the process of operating the thermal biopsy forceps to perform coagulation or cutting of human tissues and the like, one hand holds the hand ring 19, the other hand holds the movable handle 17, the opening or closing of the two forceps heads 1 in the prior art can be realized in the process of sliding the movable handle 17 along the axial direction of the core bar 18, when the end sleeve 31 rotates around the radial direction of the core bar 18, the end sleeve 31, the clamping block 35 and the boosting tube 33 are cooperatively acted to drive the clamping block 35 to link the boosting tube 33 to realize the radial rotation of the driving wire 16 in the process of the radial rotation of the end sleeve 31, the rotating acting force of the driving wire 16 is transmitted to the two forceps heads 1 due to the transmission action of the pull rod connected with the driving wire 16, the two forceps heads 1 generate the rotating action relative to the spring outer tube 20, at the moment, under the transmission action of the pin shaft 2 connected with the two forceps heads 1, the upper forceps frame 3 and the connecting frame 4 synchronously rotate, at the moment, due to the rotating fit relation between the connecting frame 4 and the lower forceps frame, the lower forceps frame cannot form resistance to the rotation of the connecting frame 4 and the upper forceps frame 3, and the flexibility and the adaptability of the two forceps heads 1 in the process of cutting and coagulating operation on human tissues can be improved through the rotation of the two forceps heads 1.

The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, 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, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements 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 expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific 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 disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features 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

1. A thermal biopsy forceps, comprising: the clamp head structure, the clamp head control structure and the handle structure are connected with the clamp head structure;

2. The thermal biopsy forceps of claim 1, wherein the other end of the electrode connector is fixedly connected to the driving wire through a fixing block after passing through the movable handle.

3. The thermal biopsy forceps of claim 1, wherein a pair of the wings are symmetrically provided with insertion holes adapted to allow the pin to be inserted therethrough, at portions of the wings remote from the base.

4. The thermal biopsy forceps of claim 1, wherein the base includes a small inner diameter portion connected to the pair of wings, and a large inner diameter portion integrally formed with the small inner diameter portion; an L-shaped step part is formed at the boundary of the large inner diameter part and the small inner diameter part; and

5. The thermal biopsy forceps of claim 4, wherein the large inner diameter portion is adapted to fit over an outer sidewall of the connecting frame, and an end of the connecting frame facing the upper forceps frame is adapted to abut against the L-shaped step portion after the large inner diameter portion is fitted over the connecting frame.

6. The thermal biopsy forceps of claim 5, wherein the large inner diameter portion is adapted to be riveted to the connecting frame after the large inner diameter portion is sleeved with the connecting frame.

7. The thermal biopsy forceps of claim 4, wherein the connecting frame is provided with a raised convex step of annular structure on the outer side wall of the end part facing the lower forceps frame;

8. The thermal biopsy forceps of claim 1, wherein the handle structure comprises an outer spring tube fixedly connected to the lower forceps holder, a core bar having one end connected to the outer spring tube, and a bracelet connected to the other end of the core bar; the transmission wire penetrates through the spring outer tube and the core rod; the movable handle is sleeved outside the core rod; the movable handle is suitable for reciprocating sliding along the length direction of the core rod.

9. The thermal biopsy forceps of claim 8, further comprising a power assembly adapted to drive radial rotation of a drive wire;

10. The thermal biopsy forceps of claim 9, wherein the inner cavity wall of the end sleeve connected with the core rod is provided with at least one raised annular caulking groove along the radial direction of the end sleeve; and

the connecting sleeve is fixedly connected with the outer spring tube.