CN113974704A

CN113974704A - Biopsy forceps and endoscopic surgery device

Info

Publication number: CN113974704A
Application number: CN202111399982.2A
Authority: CN
Inventors: 王新如; 左玉星
Original assignee: Hangzhou Tangji Medical Technology Co ltd
Current assignee: Hangzhou Tangji Medical Technology Co ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-01-28

Abstract

The invention discloses a biopsy forceps and an endoscopic surgery device, and relates to the technical field of medical instruments. The biopsy forceps comprise a handle and a forceps head positioned at the end part of the handle, the forceps head comprises a forceps cup, the handle comprises a hollow core bar and a sliding block which is used for sliding on the core bar so as to drive the forceps cup to open or clamp, and a boosting assembly is arranged in the core bar; the boosting assembly comprises a first boosting pipe, a force-releasing elastic part and a second boosting pipe. When the pliers is used, the first boosting pipe is driven to move by controlling the sliding block to slide, and then the second boosting pipe is driven to move by the force-releasing elastic part, so that the pliers head is driven to move by the second boosting pipe to open or clamp the pliers cup. When the control slide block moves towards the direction far away from the tong head, the effect of force release is achieved by the aid of deformation of the force release elastic piece, acting force of the force release elastic piece on the second boosting pipe is unchanged, connection points of the tong head can be protected from being damaged by large force, and the biting force of the tong head is kept constant while the tong head is pushed flexibly.

Description

Biopsy forceps and endoscopic surgery device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a biopsy forceps and an endoscopic surgery device.

Background

With the rapid development of endoscopes and other related technologies, and the frequent occurrence of cancer diseases, it is very important to use biopsy forceps to sample living tissues under an endoscope and perform slicing and pathological analysis.

At present, biopsy forceps in the field of endoscope living tissue sampling comprise a four-bar linkage, a steel wire hook structure, a hinge structure and the like, are large-caliber products, and the technology of the products with the diameter of below 1mm cannot break through, and the main technology is that the pulling force of a handle end hand cannot be constant, so that the products are pulled to be damaged and lose efficacy, and the large-caliber products cannot reach narrow parts, so that minimally invasive surgery cannot be performed.

In view of this, the invention is particularly proposed.

Disclosure of Invention

The invention aims to provide a biopsy forceps and an endoscopic surgery device, which aim to control a forceps head to have constant biting force and improve the reliability of the biopsy forceps for biting tissues.

The invention is realized by the following steps:

in a first aspect, the invention provides biopsy forceps, which comprise a handle and a forceps head positioned at the end part of the handle, wherein the forceps head comprises a forceps cup, the handle comprises a hollow core rod and a sliding block used for sliding on the core rod to drive the forceps cup to open or clamp, and a boosting assembly is arranged in the core rod; the boosting assembly comprises a first boosting pipe, a force-releasing elastic part and a second boosting pipe, a sliding notch is formed in the core rod, the sliding block extends into the core rod from the sliding notch and is connected with the first boosting pipe, one end of the force-releasing elastic part is connected with the first boosting pipe, the other end of the force-releasing elastic part is connected with the second boosting pipe, the tong head is connected to the second boosting pipe and is far away from one end of the force-releasing elastic part, the tong cup on the tong head is clamped tightly by pushing the sliding block to move towards the direction far away from the tong head, and the tong cup on the tong head is opened by pushing the sliding block to move towards the direction close to the tong head.

In an alternative embodiment, the slider includes a grip plate and a protrusion on the grip plate, the protrusion extending into the slide notch and being connected to the first booster tube.

In an optional implementation mode, the boosting assembly further comprises a limiting pipe sleeved on the first boosting pipe, and the first boosting pipe and the protruding portion are fixedly connected with the limiting pipe.

In an alternative embodiment, the top and bottom of the grip plate are each provided with an arcuate notch to facilitate gripping.

In an alternative embodiment, the length of the first booster tube is 1.3 to 1.7 times the length of the second booster tube.

In an optional embodiment, the binding clip further comprises a connecting rod and a pin shaft, the connecting rod is in a parallelogram shape, the forceps cup is connected with the end portion of the connecting rod through the pin shaft, the connecting rod is controlled to move through the sliding block, and then the forceps cup is driven to open or clamp.

In an optional embodiment, the tong head further comprises a steel wire rope, one end of the steel wire rope is connected to one end, away from the force-releasing elastic part, of the second boosting pipe, and the other end of the steel wire rope is connected to one end, away from the tong cup, of the connecting rod.

In an optional implementation mode, the steel wire rope further comprises a protection tube sleeved on the steel wire rope, one end of the protection tube is connected with the end part of the core rod, and the other end of the protection tube is fixed with the end part of the connecting rod through a pin shaft.

In an alternative embodiment, the binding clip further comprises a grip ring connected to the end of the core rod remote from the binding clip.

In a second aspect, the present invention provides an endoscopic surgical device comprising a bioptome of any of the preceding embodiments.

The invention has the following beneficial effects: the first boosting pipe is driven to move by controlling the sliding block to slide, and then the second boosting pipe is driven to move by the force-releasing elastic part, so that the second boosting pipe is used for driving the tong head to move to open or clamp the tong cup. When the control slide block moves towards the direction far away from the forceps head, the effect of force release is achieved by means of deformation of the force release elastic part, the acting force of the force release elastic part on the second boosting tube is unchanged, each connecting point of the forceps head can be protected from being damaged when large force is used, the fact that the forceps head pushes the tissue flexibly is guaranteed, the occlusion force of the forceps head is constant, and the reliability of tissue biting of the biopsy forceps is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a biopsy forceps provided in an embodiment of the present invention;

FIG. 2 is an enlarged view of area II of FIG. 1;

fig. 3 is a partial structural schematic view of the binding clip of fig. 1.

Description of the main element symbols: 100-biopsy forceps; 110-a handle; 111-core rod; 112-a slider; 1121-a grip plate; 1122-a projection; 1123-arc notch; 113-a boost assembly; 1131, a first boosting pipe; 1132-force-relief spring; 1133, a second boosting pipe; 114-a sliding notch; 115-a limiting tube; 120-binding clip; 121-forceps cup; 122-a connecting rod; 123-pin shaft; 124-steel wire rope; 125-a protective tube; 130-grip ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

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

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather 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 description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, an embodiment of the invention provides a biopsy forceps 100, which includes a handle 110, a forceps head 120 and a holding ring 130, wherein the handle 110 is located in the middle, and two ends of the handle are respectively connected to the holding ring 130 and the forceps head 120. The grip ring 130 is used for holding by the thumb, and is operated by the index finger and the middle finger on the handle 110 to control the opening or clamping of the forceps cup 121 on the forceps head 120.

The handle 110 includes a hollow stem 111 and a slider 112 for sliding the slider 112 over the stem 111 to cause the forceps cup 121 to open or clamp. Specifically, a boosting assembly 113 is arranged in the core rod 111, the boosting assembly 113 includes a first boosting tube 1131, a leakage force elastic member 1132 and a second boosting tube 1133, a sliding notch 114 is arranged on the core rod 111, the slider 112 extends into the core rod 111 from the sliding notch 114 and is connected with the first boosting tube 1131, one end of the leakage force elastic member 1132 is connected with the first boosting tube 1131, the other end of the leakage force elastic member 1132 is connected with the second boosting tube 1133, and the clamp 120 is connected to one end of the second boosting tube 1133, which is far away from the leakage force elastic member 1132.

The forceps cup 121 of the forceps head 120 is clamped by moving the push slider 112 in a direction away from the forceps head 120, and the forceps cup 121 of the forceps head 120 is opened by moving the push slider 112 in a direction close to the forceps head 120. The elastic member 1132 is deformed by pushing the sliding block 112 to move in the direction far away from the forcep 120, the deformation of the elastic member is utilized to play the role of force leakage, the acting force transmitted to the second boosting pipe 1133 by the elastic member 1132 is unchanged, and each connecting point of the forcep can be protected from being damaged by a large force, so that the clamping force of the forcep 120 is kept constant while the forcep 120 is pushed flexibly.

Specifically, one end of leakage elastic member 1132 may be connected to first booster pipe 1131 by welding, and the other end of leakage elastic member 1132 may also be connected to second booster pipe 1133 by welding, so that first booster pipe 1131, leakage elastic member 1132 and second booster pipe 1133 form a whole by welding.

In some embodiments, the slider 112 includes a grip plate 1121 and a protrusion 1122 on the grip plate 1121, and the protrusion 1122 extends into the sliding notch 114 and is connected to the first boost tube 1131. The protrusion 1122 is matched with the sliding notch 114 in size, the protrusion 1122 extends into the sliding notch 114, and the first boosting tube 1131 can be driven to slide in the core rod 111 by controlling the sliding of the grip plate 1121 and using the protrusion 1122.

Specifically, the shape of the sliding notch 114 of the stem 111 is not limited, and may be square, which is adapted to the shape of the protrusion 1122.

In some embodiments, the boosting assembly 113 further includes a limiting tube 115 sleeved on the first boosting tube 1131, and both the first boosting tube 1131 and the protrusion 1122 are fixedly connected to the limiting tube 115. That is, the first booster pipe 1131 is connected to the boss portion 1122 via the stopper pipe 115, and can be fixed by bonding the first booster pipe 1131 and the stopper pipe 115, and fixed by bonding the stopper pipe 115 and the boss portion 1122, thereby fixing the first booster pipe 1131 and the boss portion 1122.

In other embodiments, the first booster tube 1131 and the stopper tube 115 are fixed by bonding, and the first booster tube 1131 and the boss 1122 may be fixed by bonding, screws, or the like.

In some embodiments, both the top and bottom of the grip plate 1121 are provided with arcuate notches 1123 to facilitate gripping. The arc-shaped notch 1123 facilitates gripping by the middle finger and the index finger, and the gripping plate 1121 is clamped by the middle finger and the index finger. When the portable handheld electronic device is used, the thumb extends into the holding ring 130, and the middle finger and the index finger clamp the holding plate 1121 to drive the sliding block 112 to slide, so that the operation is convenient.

To achieve a better boosting effect, the length of the first boosting tube 1131 is 1.3 to 1.7 times, such as 1.3 times, 1.4 times, 1.5 times, 1.6 times, and 1.7 times, the length of the second boosting tube 1133. That is, the first booster pipe 1131 is a long booster pipe, and the second booster pipe 1133 is a short booster pipe.

Further, referring to fig. 2 and 3, the forceps head 120 includes a forceps cup 121, a connecting rod 122 and a pin 123, the connecting rod 122 is in a parallelogram shape, the forceps cup 121 is connected to an end of the connecting rod 122 through the pin 123, and the sliding block 112 controls the movement of the connecting rod 122, so as to drive the forceps cup 121 to open or clamp. The forceps cup 121 is driven to close when the pull link 122 is extended, and the forceps cup 121 is opened when the push link 122 is contracted.

Specifically, the parallelogram-shaped connecting rod 122 comprises 4 connecting pieces with the same size, which are connected in sequence, and linkage can be realized by driving the connecting rod connecting point at the end part to move.

Specifically, the forceps cup 121 includes two oppositely disposed clamping heads, and the two clamping heads are provided with engaging teeth that are engaged with each other, so that the clamping is stable.

Further, the tong head 120 further includes a wire cable 124, one end of the wire cable 124 is connected to one end of the second boosting pipe 1133 away from the force-releasing elastic member 1132, and the other end of the wire cable 124 is connected to one end of the connecting rod 122 away from the tong cup 121. When the second boosting pipe 1133 moves, the wire rope 124 drives the connecting rod 122 to elongate or contract, and one end of the wire rope 124 far from the connecting rod 122 extends into the core rod 111 and is connected with the end of the second boosting pipe 1133.

It should be noted that, when the pushing slider 112 moves in the direction away from the forceps head 120, the force-releasing elastic member 1132 deforms, and the deformation of the force-releasing elastic member is utilized to achieve the force-releasing effect, so that the acting force transmitted from the force-releasing elastic member 1132 to the second boosting tube 1133 is not changed, and further the force transmitted from the second boosting tube 1133 to the wire rope 124 is not changed, thereby ensuring that the connecting rod 122 pulls the forceps cup 121 and the forceps cup 121 is fixed around each connection point of the pin shaft 123, so as to ensure that the biopsy forceps 100 can be opened and closed smoothly.

In other embodiments, the cable 124 may be replaced with other connecting rod-like structures, not limited to a cable.

Specifically, the wire rope 124 may be connected to the second boosting pipe 1133 by welding, so as to form an integral structure.

In some embodiments, the binding clip 120 further includes a protection tube 125 sleeved on the wire rope 124, one end of the protection tube 125 is connected to the end of the core rod 111, and the other end of the protection tube 125 is fixed to the end of the connecting rod 122 by a pin 123. The protection tube 125 protects the steel cable 124 and prevents external interference with the operation of the steel cable 124 and transmission of influence.

Specifically, the protection tube 125 may be fixed integrally with the core bar 111 by bonding.

Specifically, the outer diameter of the forceps head 120 is smaller than 1mm, that is, the outer diameter of the protection tube 125 is smaller than 1mm, so that a narrow part can be reached for performing minimally invasive surgery.

An endoscopic surgical device is also provided in an embodiment of the present invention, including the biopsy forceps 100 according to any one of the foregoing embodiments, and may further include other medical devices such as an endoscope, which are not illustrated here. Through the improvement of the biopsy forceps 100, the biting force of the forceps head 120 can be constant, the reliability of the biopsy forceps for biting tissues is improved, and the operation effect is further improved.

In summary, the invention provides a biopsy forceps and an endoscopic surgery device, wherein an integrated boosting structure is formed by a first boosting tube, a force-releasing elastic part and a second boosting tube, the first boosting tube is driven to move by controlling the sliding of a sliding block, and then the second boosting tube is driven to move by the force-releasing elastic part, so that the forceps head is driven to move by the second boosting tube to realize the opening or clamping of the forceps cup. When the control slide block moves towards the direction far away from the forceps head, the effect of force release is achieved by means of deformation of the force release elastic part, the acting force of the force release elastic part on the second boosting tube is unchanged, each connecting point of the forceps head can be protected from being damaged when large force is used, the fact that the forceps head pushes the tissue flexibly is guaranteed, the occlusion force of the forceps head is constant, and the reliability of tissue biting of the biopsy forceps is improved.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The biopsy forceps are characterized by comprising a handle and a forceps head positioned at the end part of the handle, wherein the forceps head comprises a forceps cup, the handle comprises a hollow core bar and a sliding block used for sliding on the core bar to drive the forceps cup to open or clamp, and a boosting assembly is arranged in the core bar;

the boosting assembly comprises a first boosting pipe, a force-releasing elastic part and a second boosting pipe, a sliding gap is formed in the core rod, the sliding block extends into the core rod from the sliding gap and is connected with the first boosting pipe, one end of the force-releasing elastic part is connected with the first boosting pipe, the other end of the force-releasing elastic part is connected with the second boosting pipe, the tong head is connected to one end, far away from the force-releasing elastic part, of the second boosting pipe, the sliding block is pushed to move towards the direction far away from the tong head, so that the tong cup on the tong head is clamped tightly, and the sliding block is pushed to move towards the direction close to the tong head, so that the tong cup on the tong head is opened.

2. The bioptome of claim 1, wherein the slider includes a grip plate and a boss on the grip plate, the boss extending into the slide notch and being coupled to the first boost tube.

3. The biopsy forceps of claim 2, wherein the boost assembly further comprises a limiting tube sleeved on the first boost tube, and the first boost tube and the protrusion are both fixedly connected to the limiting tube.

4. The bioptome of claim 2, wherein the top and bottom of the grasping plate are each provided with an arcuate notch to facilitate grasping.

5. The bioptome of any one of claims 1-4, wherein the length of the first booster tube is 1.3-1.7 times the length of the second booster tube.

6. The biopsy forceps according to claim 1, wherein the forceps head further comprises a connecting rod and a pin, the connecting rod is in a parallelogram shape, the forceps cup is connected with the end of the connecting rod through the pin, and the sliding block is used for controlling the connecting rod to move so as to drive the forceps cup to open or clamp.

7. The biopsy forceps of claim 6, wherein the forceps head further comprises a wire cable, one end of the wire cable is connected to the end of the second boosting tube away from the force-releasing elastic member, and the other end of the wire cable is connected to the end of the connecting rod away from the forceps cup.

8. The biopsy forceps according to claim 7, wherein the forceps head further comprises a protection tube sleeved on the steel wire rope, one end of the protection tube is connected with the end of the core rod, and the other end of the protection tube is fixed with the end of the connecting rod through the pin shaft.

9. The bioptome of claim 1, further comprising a grip ring coupled to an end of the core shaft distal to the forceps head.

10. Endoscopic surgical device, characterized in that it comprises a biopsy forceps according to any one of claims 1-9.