CN109498071B

CN109498071B - Cervix biopsy forceps

Info

Publication number: CN109498071B
Application number: CN201811593385.1A
Authority: CN
Inventors: 姚建南; 陆亚明
Original assignee: Changzhou Chentao Medical Devices Co ltd
Current assignee: Changzhou Chentao Medical Devices Co ltd
Priority date: 2018-12-25
Filing date: 2018-12-25
Publication date: 2021-06-29
Anticipated expiration: 2038-12-25
Also published as: CN109498071A

Abstract

The invention discloses cervical biopsy forceps and relates to the technical field of medical instruments. The movable clamp comprises a fixed clamp body and a movable clamp body, wherein the movable clamp body slides on the fixed clamp body, a fixed clamp head is arranged at the front end of the fixed clamp body, and a movable clamp head matched with the fixed clamp head is hinged at the front end of the movable clamp body; the rear end of the fixed tong head is fixedly connected with a fixed handle, the rear side of the movable tong head is provided with a movable handle hinged to the fixed handle, an elastic piece for driving the fixed handle and the movable handle to be away from each other is arranged between the fixed handle and the movable handle, and when the movable handle is pressed, the movable tong body slides towards the front end and drives the movable tong head to be covered on the fixed tong head; when the movable clamp head is closed on the fixed clamp head, the rear end of the movable clamp body extends into the rear end of the fixed clamp head, when the movable clamp head is separated from the fixed clamp head, the rear end of the movable clamp body penetrates out of the rear end of the fixed clamp head, and the rear end of the fixed clamp body is rotatably connected with a self-locking piece capable of blocking the movable clamp body from penetrating out.

Description

Cervix biopsy forceps

Technical Field

The invention relates to the technical field of medical instruments, in particular to cervical biopsy forceps.

Background

Cervical biopsy is a biopsy of the cervix, i.e., a small piece or pieces of tissue is taken from the cervix for pathological examination to determine a diagnosis. Cervical biopsy procedures are simple. After the vulva, vagina and cervix are disinfected, a special cervix biopsy forceps is used to take several small pieces of tissue according to the pathological change part and requirements of uterus.

At present, chinese patent with publication number CN203861274U discloses a uterus biopsy forceps, which comprises a movable forceps head, a fixed forceps body, a connecting rod and a movable handle, wherein the front end of the fixed forceps body is provided with the fixed forceps head, a movable forceps head clamping groove is arranged in the fixed forceps head, the movable forceps head is movably connected with the connecting rod through a pin shaft, two sides of the tail of the movable forceps head are provided with outward protruding flat shafts integrally processed with the movable forceps head, grooves are arranged on the inner walls of the fixed forceps heads at two sides of the movable forceps head clamping groove corresponding to the outward protruding flat shafts, each groove is composed of a circular groove and a strip-shaped sliding groove, the width of each strip-shaped sliding groove is the same as the width of the cross section of the outward protruding flat shaft, one end of each strip-shaped sliding groove is communicated with the circular groove, an opening at the other end is positioned on the upper end face of the fixed forceps head, the outward protruding.

Similar to the above-mentioned cervical biopsy forceps in the prior art, the movable forceps head is generally in an open state when the cervical biopsy forceps are not used; the clamp mouth of the movable clamp head is directly outward in an opening state, and the cutting edge is easy to damage.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention aims to provide cervical biopsy forceps which have the advantage of protecting the cutting edge of the forceps mouth.

In order to achieve the purpose, the invention provides the following technical scheme: a cervical biopsy forceps comprises a fixed forceps body and a movable forceps body, wherein the movable forceps body slides on the fixed forceps body, a fixed forceps head is arranged at the front end of the fixed forceps body, and a movable forceps head matched with the fixed forceps head is hinged to the front end of the movable forceps body; the rear end of the fixed tong head is fixedly connected with a fixed handle, the rear side of the movable tong head is provided with a movable handle hinged to the fixed handle, an elastic piece for driving the fixed handle and the movable handle to be away from each other is arranged between the fixed handle and the movable handle, and when the movable handle is pressed, the movable tong body slides towards the front end and drives the movable tong head to be covered on the fixed tong head; when the movable clamp head is closed to the fixed clamp head, the rear end of the movable clamp body extends into the rear end of the fixed clamp head, when the movable clamp head is separated from the fixed clamp head, the rear end of the movable clamp body penetrates out of the rear end of the fixed clamp head, and the rear end of the fixed clamp body is rotatably connected with a self-locking piece capable of blocking the movable clamp body from penetrating out.

By adopting the technical scheme, during operation, an operator presses the movable handle to one side of the fixed handle, so that the movable clamp body slides to the front end, the movable clamp head is covered on the fixed clamp head to form shearing force, and the shearing sampling of the living body at the specified position is realized. When the sampling forceps are not used, the movable forceps body can move towards the front end by pressing the movable handle, and the movable forceps head is covered on the fixed forceps head; then the self-locking plate is rotated, so that the self-locking plate is blocked on a reset path of the movable clamp body, and the movable clamp body cannot move towards the rear end; thereby move the binding clip cooperation to fixed binding clip in this kind of state for move the binding clip and can not expose in the external world, played the guard action to the binding clip, reduced the risk that the binding clip received the damage of colliding with in transport or save process.

The invention is further configured to: the end face of one side of the fixed handle facing the movable handle is vertically provided with a driving ejector rod in a sliding mode, and a driving rod which drives the self-locking piece to rotate when the driving ejector rod is ejected into one side of the fixed handle is arranged between the driving ejector rod and the self-locking piece.

By adopting the technical scheme, when the movable handle is pressed and rotates towards one side of the fixed handle, the movable handle can be abutted against the driving ejector rod, so that the driving ejector rod slides in the fixed handle; thereby the driving rod drives the self-locking plate to rotate to realize self-locking; the self-locking can be formed only by pressing down the handle under the condition of requirement.

The invention is further configured to: the driving rod slides in parallel to the end face of one side of the fixed handle, which is far away from the movable handle, and one end of the driving rod, which is far away from the self-locking plate, is provided with a driving inclined plane and abuts against one end, which extends into the fixed handle, of the driving ejector rod; and one side of the self-locking plate facing the fixed clamp body is provided with a driving groove for driving the driving rod to extend into the butt joint.

By adopting the technical scheme, the driving ejector rod can be converted into a driving ejector rod sliding inwards through the abutting of the driving inclined plane, and the driving rod slides inwards; and because the end of the driving rod far away from the driving inclined plane is abutted against the driving groove of the self-locking plate, the self-locking plate can be stably driven to rotate under the sliding of the driving rod.

The invention is further configured to: and one end of the driving ejector rod facing the movable handle is in threaded connection with an adjusting rod.

Through adopting above-mentioned technical scheme, adjust the pole and can adjust the length that the drive ejector pin stretches out, when not needing, can inwards revolve and twist the regulation pole for press down and move the handle and can not drive the rotation of self-locking plate.

The invention is further configured to: the movable tong head comprises a shearing part arranged at the front end of the hinged part and a transmission part arranged at the rear end of the hinged part; the fixed clamp body is provided with a transmission slide way for the transmission part to slide, the transmission slide way is obliquely arranged, and the front end of the transmission slide way is far away from one side of the movable clamp body.

Through adopting above-mentioned technical scheme, under the cooperation of transmission slide and driving medium, move down when the pincers body front end, will drive the shearing piece and overturn to moving binding clip one side, guarantee to move the handle and press and realize stable shearing.

The invention is further configured to: the front end of the shearing part is fixedly connected with a circular cutting nozzle, a cutting hole for inserting the circular cutting nozzle is formed in the fixed forceps head, and a cutting edge is formed in the circumferential outer wall of the circular cutting nozzle.

Through adopting above-mentioned technical scheme, when cuting, the ring cutting mouth enters into and cuts the downthehole, and the blade contacts with the lateral wall in cutting the hole, realizes the excision to the assigned position.

The invention is further configured to: the middle part level is provided with in the earnestly stays a kind pole, ring cutting mouth middle part is provided with lets a position mouth.

By adopting the technical scheme, the sample reserving rod plays a role in blocking, when the ring cutting nozzle is covered in the cutting hole, the sample body can be cut into the cutting hole, and the sample body cannot be moved out of the cutting hole due to the blocking of the sample reserving rod; and because the arrangement of the position-giving opening ensures that the circular cutting nozzle can not contact with the sample-remaining nozzle, the cutting is affected.

The invention is further configured to: the front end of the fixed binding clip is provided with a positioning convex tip which is sleeved outside the circular cutting nozzle.

Through adopting above-mentioned technical scheme, because the setting of the protruding point of location is after moving the binding clip to suitable position, the card through the protruding point of location is gone into corresponding position, can realize moving the location of binding clip, prevents to move the binding clip and skids.

The invention is further configured to: the transmission slide way is arc-shaped, and the circle center of the transmission slide way is far away from one side of the movable clamp body.

Through adopting above-mentioned technical scheme, the transmission slide is the arc that the centre of a circle kept away from moving tong body one side for the shearing part rotates and can be earlier slow afterwards fast, reaches better excision effect.

The invention is further configured to: the elastic piece comprises a first elastic piece and a second elastic piece, one end of the first elastic piece is fixedly connected to the movable handle, and one end of the second elastic piece is fixedly connected to the fixed handle; the other ends of the first elastic sheet and the second elastic sheet are connected in an abutting mode.

By adopting the technical scheme, when the movable handle is pressed down, the first elastic sheet and the second elastic sheet deform towards the abutted side to generate elasticity, and elasticity is generated; the first elastic sheet and the second elastic sheet generate elasticity, so that the installation is convenient, and the structure is simple.

Compared with the prior art, the invention has the beneficial effects that:

(1) through setting up from the locking plate for cervix biopsy forceps has from the lock state, moves the binding clip under the lock state and can not expose in the external world, has reduced the risk that the binding clip received the damage of colliding with in transport or save process. (ii) a

(2) By arranging the driving ejector rod and the driving rod structure, self-locking can be formed only by pressing the handle in the required condition;

(3) the front end of the fixed jaw is provided with the positioning convex tip, so that the movable jaw is prevented from slipping during sampling.

Drawings

FIG. 1 is a schematic structural diagram of the present embodiment;

FIG. 2 is an exploded partial view of the movable clamp body of the highlighted structure in the present embodiment;

FIG. 3 is a schematic front view with a partial cross-section of the present embodiment;

fig. 4 is an enlarged structural diagram of a in fig. 3.

Reference numerals: 1. a fixed clamp body; 2. a fixed handle; 3. a handle is moved; 4. a movable clamp body; 5. an elastic member; 6. fixing a tong head; 7. a movable tong head; 8. a cutting member; 9. a transmission member; 10. a drive slide; 11. a driving strap; 12. a transmission salient point; 13. cutting the nozzle circularly; 14. a let position port; 15. cutting holes; 16. a sample retention rod; 17. a self-locking plate; 18. driving the ejector rod; 19. driving the rod; 20. a drive ramp; 21. a driving groove; 22. adjusting a rod; 23. a finger stop handle; 24. a lower hook; 25. a tiger's mouth blocking handle; 26. rubbing the grains; 27. a first spring plate; 28. a second elastic sheet; 29. and positioning the convex tip.

Detailed Description

The invention is described in detail below with reference to the figures and examples.

In an embodiment, a cervical biopsy forceps is shown in fig. 1, and comprises a fixed frame body, a movable handle 3 and a movable forceps body 4. The fixed frame body is roughly in an obtuse angle shape formed by two side edges and comprises a fixed clamp body 1 which is horizontally arranged to form one side edge and a fixed handle 2 which is obliquely and integrally connected to one end of the fixed clamp body 1 to form the other side edge. The movable clamp body 4 is arranged on the end face of one side of the fixed clamp body 1 far away from the fixed handle 2 and slides on the fixed clamp body 1 along the length direction of the fixed clamp body 1, and the movable handle 3 is hinged between the fixed handle 2 and the fixed clamp body 1. The upper end of the movable handle 3 passes through the fixed clamp body 1 and is connected to the movable clamp body 4, and an elastic part 5 for driving the fixed handle 2 and the movable handle 3 to be far away is arranged between the fixed handle 2 and the movable handle 3. When the movable handle 3 is pressed down to one side of the fixed handle 2, the movable clamp body 4 is driven by the movable handle 3 to slide towards the front end of the movable clamp body 4. Furthermore, a waist-shaped hole is formed in one side, facing the movable clamp body 4, of the movable handle 3, and the movable clamp body 4 is hinged in the waist-shaped hole, so that after the movable handle 3 is pressed down, the movable clamp body 4 can slide stably and cannot be clamped.

As shown in fig. 1 and 2, a fixed jaw 6 is provided at the front end of the fixed jaw 1, and a movable jaw 7 fitted to the fixed jaw 1 is hinged to the front end of the movable jaw 4. Move binding clip 7 including setting up in the shearing piece 8 of articulated department front end and setting up in the driving medium 9 of articulated department rear end, be provided with the transmission slide 10 that supplies driving medium 9 to slide on the stationary tong body 1, move forward for stationary tong body 1 when moving the binding clip 4, under the effect of transmission slide 10, move binding clip 7 and can overturn to stationary tong head 6 one side, cut the sample. Specifically, the transmission member 9 includes a transmission strap 11 and transmission protrusions 12 disposed at both ends of the transmission strap 11. The transmission salient points 12 are embedded into the transmission slide ways 10 and slide downwards under the guidance of the transmission slide ways 10. Specifically, the transmission slide way 10 is arc-shaped, the circle center of which is far away from one side of the moving clamp body 4, and the front end of the transmission slide way 10 is far away from one side of the moving clamp body 4. So that the rotation of the shearing part 8 is slow firstly and then fast, and a better cutting effect is achieved.

As shown in fig. 1 and 2, the front end of the shearing part 8 is fixedly connected with a circular cutting nozzle 13, a cutting edge is arranged on the circumferential outer wall of the circular cutting nozzle 13, and an inwards concave abdicating opening 14 is arranged in the middle of the circular cutting nozzle 13. It should be noted that the shape of the ring cutting mouth 13 can be customized according to the requirement and is not limited in this embodiment. The fixed tong head 6 is provided with a cutting hole 15 for inserting the circular cutting nozzle 13, and the middle part in the cutting hole 15 is horizontally provided with a sample reserving rod 16 corresponding to the position giving opening 14. The front end of the cutting hole 15 of the fixed tong head 6 is provided with a positioning convex tip 29 which is sleeved outside the annular cutting nozzle 13. When the fixed jaw 6 is directed to the positioning designated portion, the positioning projection 29 is engaged with the corresponding portion to prevent the movable jaw 7 from slipping. During shearing, the circular cutting nozzle 13 enters the cutting hole 15, the cutting edge is contacted with the side wall of the cutting hole 15, and the specified position is cut. After the cutting is finished, the sample body can be cut into the cutting hole 15, and due to the blocking of the sample retaining rod 16, the sample body is ensured not to move out of the cutting hole 15 and fall off.

Further, as shown in fig. 1 and 3, when the movable handle 3 is not pressed, the rear end of the movable clamp body 4 penetrates out of the rear end of the fixed clamp body 1; when the handle 3 is pressed toward the side of the fixed handle 2, the rear end of the movable clamp body 4 is completely inserted into the rear end of the fixed clamp body 1. Furthermore, the rear end of the fixed clamp body 1 is rotatably connected with a self-locking piece 17 which can block the movable clamp body 4 from penetrating out.

Specifically, as shown in fig. 1 and 3, the self-locking piece 17 is formed by cutting off an arc on one side of a circular piece through a horizontal cut, and the center of the self-locking piece 17 is rotatably connected to the stationary clamp body 1 through a rotating shaft. The side wall of the circumference of the self-locking plate 17 is provided with straight knurling, so that the hand can directly rotate conveniently.

As shown in fig. 3 and 4, a driving ejector 18 is vertically slidably disposed on an end surface of one side of the fixed handle 2 facing the movable handle 3, and a driving rod 19 is disposed between the driving ejector 18 and the self-locking plate 17 for driving the self-locking plate 17 to rotate when the driving ejector 18 is ejected into one side of the fixed handle 2. Specifically, drive rod 19 parallel slides in deciding handle 2 and keeping away from a side end face of moving handle 3, and concrete mode of sliding can set up the spout on deciding the terminal surface of handle 2, and drive rod 19 is towards moving handle one side link block. One end of the driving rod 19, which is far away from the self-locking plate 17, is provided with a driving inclined surface 20, and one end of the driving ejector rod 18, which extends into the fixed handle 2, is vertically abutted against the driving inclined surface 20. The side of the self-locking plate 17 far from the horizontal notch faces the end face of one side of the fixed clamp body 1 and is provided with a driving groove 21, and the driving rod 19 extends into the driving groove 21 and is abutted against the eccentric side of the self-locking plate 17. The driving ejector rod 18 slides towards the inside of the fixed handle 2, and under the driving of the driving inclined plane 20, the driving rod 19 can firstly eject the self-locking plate 17 to one side of the movable clamp body 4, so that the self-locking plate 17 is blocked on a path through which the movable clamp body 4 penetrates, and the movable clamp body 4 is locked.

Further, as shown in fig. 3 and 4, an adjusting rod 22 is screwed to an end of the driving stem 18 facing the handle 3. The adjusting rod 22 can adjust the extending length of the driving mandril 18, and when the adjusting rod 22 is not needed, the adjusting rod 22 can be screwed inwards, so that the self-locking plate 17 can not be driven to rotate by pressing the handle 3.

Further, as shown in fig. 3 and 4, a grip portion to be gripped by a human hand is provided on the lower sides of the movable handle 3 and the fixed handle 2, and the grip portion includes a finger stopper 23 integrally connected to the upper side of the fixed handle 2 on the outer end surface of the movable handle 3 and a lower hook 24 integrally connected to the lower end of the fixed handle 2. The grip portion further comprises a first web stop 25 integrally connected to the upper side of the fixed handle 2 on the outer end face of the fixed handle 2 and a friction line 26 arranged in a corrugated shape on the lower side of the end face of the fixed handle 2 far away from the movable handle 3.

As shown in fig. 3, the elastic element 5 includes a first elastic sheet 27 and a second elastic sheet 28, one end of the first elastic sheet 27 is fixedly connected to the movable handle 3, and one end of the second elastic sheet 28 is fixedly connected to the fixed handle 2; the other ends of the first elastic sheet 27 and the second elastic sheet 28 are abutted. When the handle 3 is pressed, the first elastic piece 27 and the second elastic piece 28 are deformed to the abutting side to generate elasticity, and the elasticity is generated.

The working process and the beneficial effects of the invention are as follows:

during operation, an operator presses the movable handle 3 to one side of the fixed handle 2, so that the movable clamp body 4 slides towards the front end, the movable clamp head 7 covers the fixed clamp head 6, a shearing force is formed, and the shearing sampling of the living body at the designated position is realized. When the sampling forceps are not used, the movable forceps body 4 can move towards the front end by pressing the movable handle 3, and the movable forceps head 7 covers the fixed forceps head 6; then, the self-locking piece 17 is rotated, so that the self-locking piece 17 is blocked on the reset path of the movable clamp body 4, and the movable clamp body 4 cannot move towards the rear end; therefore, the movable clamp head 7 is matched with the fixed clamp head 6 in the state, so that the movable clamp head 7 cannot be exposed outside, the protection effect on the clamp head is achieved, and the risk that the clamp head is damaged by collision in the conveying or storing process is reduced.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides a cervical biopsy forceps, includes the stationary tong body (1) and moves the pincers body (4), move pincers body (4) and slide on the stationary tong body (1), its characterized in that: the front end of the fixed clamp body (1) is provided with a fixed clamp head (6), and the front end of the movable clamp body (4) is hinged with a movable clamp head (7) matched with the fixed clamp head (6); the rear end of the fixed tong head (6) is fixedly connected with a fixed handle, the rear side of the movable tong head (7) is provided with a movable handle (3) hinged to the fixed handle (2), an elastic piece (5) for driving the fixed handle (2) and the movable handle (3) to be away from each other is arranged between the fixed handle (2) and the movable handle (3), and when the movable handle (3) is pressed, the movable tong body (4) slides towards the front end and drives the movable tong head (7) to cover the fixed tong head (6); when the movable tong head (7) covers the fixed tong head (6), the rear end of the movable tong body (4) extends into the rear end of the fixed tong head (6), when the movable tong head (7) is separated from the fixed tong head (6), the rear end of the movable tong body (4) penetrates out of the rear end of the fixed tong head (6), and the rear end of the fixed tong body (1) is rotatably connected with a self-locking plate (17) which can block the movable tong body (4) from penetrating out;

the end face of one side of the fixed handle (2) facing the movable handle (3) is vertically provided with a driving ejector rod (18) in a sliding manner, and a driving rod (19) which drives the self-locking plate (17) to rotate when the driving ejector rod (18) is ejected into one side of the fixed handle (2) is arranged between the driving ejector rod (18) and the self-locking plate (17).

2. The cervical biopsy forceps of claim 1, wherein: the driving rod (19) slides in parallel to the end face of one side of the fixed handle (2) far away from the movable handle (3), and one end of the driving rod (19) far away from the self-locking plate (17) is provided with a driving inclined plane (20) and abuts against one end, extending into the fixed handle (2), of the driving ejector rod (18); and one side of the self-locking plate (17) facing the fixed clamp body (1) is provided with a driving groove (21) for driving the driving rod (19) to extend into the butt joint.

3. The cervical biopsy forceps of claim 2, wherein: one end of the driving ejector rod (18) facing the movable handle (3) is connected with an adjusting rod (22) through threads.

4. The cervical biopsy forceps of claim 2, wherein: the movable tong head (7) comprises a shearing part (8) arranged at the front end of the hinged part and a transmission part (9) arranged at the rear end of the hinged part; the fixed clamp body (1) is provided with a transmission slide way (10) for the transmission part (9) to slide, the transmission slide way (10) is obliquely arranged, and the front end of the transmission slide way is far away from one side of the movable clamp body (4).

5. The cervical biopsy forceps of claim 4, wherein: the front end of the shearing part (8) is fixedly connected with a ring cutting nozzle (13), a cutting hole (15) for inserting the ring cutting nozzle (13) is formed in the fixed binding clip (6), and a cutting edge is formed in the circumferential outer wall of the ring cutting nozzle (13).

6. The cervical biopsy forceps of claim 5, wherein: the middle part level is provided with in earnestly hole (15) and stays a kind pole (16), ring cutting mouth (13) middle part is provided with lets position mouth (14).

7. The cervical biopsy forceps of claim 5, wherein: the front end of the fixed tong head (6) is provided with a positioning convex tip (29) which is sleeved outside the annular cutting nozzle (13).

8. The cervical biopsy forceps of claim 4, wherein: the transmission slide way (10) is arc-shaped, and the circle center of the arc-shaped is far away from one side of the movable clamp body (4).

9. The cervical biopsy forceps of claim 1, wherein: the elastic piece (5) comprises a first elastic piece (27) and a second elastic piece (28), one end of the first elastic piece (27) is fixedly connected to the movable handle (3), and one end of the second elastic piece (28) is fixedly connected to the fixed handle (2); the other ends of the first elastic sheet (27) and the second elastic sheet (28) are abutted.