A lung cancer tumor biopsy forceps head assembly

Abstract

The utility model provides a kind of lung cancer tumor biopsy forceps head subassembly, the utility model relates to medical instrument technical field, including head tube, head tube is inserted and is connected with the setting of inlay seat, a pair of forceps head is hingedly arranged on inlay seat, each forceps head edge is fixed with hinged axle disc, and two hinged axle discs and inlay seat are coaxial docking shear joint structure, hinged axle disc outside extends and forms shear arm, and shear arm end portion is sleeved with pull ring;The utility model has the beneficial effects that: the occlusion part of forceps head mouth is provided with the cutting blade structure for pulling drive, so that the forceps head can use the cutting blade of the end of mouth to further occlusion resection to tumor tissue after occlusion, cooperate the occlusion action of forceps head mouth part to ensure the complete resection when tumor tissue is resected and sampled, avoid the tearing damage of surrounding tissue caused by tissue adhesion, cooperate the support rod arranged in articulated occlusion force arm in cooperation structure, to cooperate the movable flexure adjustment support rod of shear arm, traction shaft.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to a forceps assembly for lung cancer tumor biopsy. Background Technology

[0002] Lung cancer tumor biopsy is a key medical procedure to obtain samples of diseased tissue for definitive diagnosis. Common methods include bronchoscopic biopsy, percutaneous biopsy, or surgical resection biopsy. Doctors take precise samples under the guidance of imaging technology (such as CT or ultrasound), and then determine the benign or malignant nature, histological type (such as adenocarcinoma or squamous cell carcinoma), and molecular characteristics of the tumor through pathological analysis, providing a basis for developing treatment plans such as targeted therapy and immunotherapy. Surgical resection biopsy is often used when the tumor is deep, large, or suspected to be early-stage lung cancer (such as when the nature of a lung nodule is unclear). Compared with puncture or bronchoscopic biopsy, it provides more complete tissue and higher diagnostic accuracy. During the procedure, doctors usually use biopsy forceps to penetrate the surgical incision to reach the tumor site for sampling and resection. Due to the long distance of penetration, when resecting some hard and small tumor tissues, the biting force of the conventional forceps head assembly is limited by the traction attenuation of the distal operation. After the tissue is taken, there is a risk of tearing because the tissue is not severed. Moreover, the distal biting operation mainly relies on the elastic structure between the handle and the traction shaft. There is elastic attenuation in the biting and biting reset of the forceps head, which limits the sensitivity of the operation response. Utility Model Content

[0003] The technical problem to be solved by this utility model is that the biting force and tissue resection effect of existing biopsy forceps head assemblies are limited by distal operation. In view of the problems existing in the prior art, a lung cancer tumor biopsy forceps head assembly is provided.

[0004] The purpose and effect of this utility model are achieved by the following specific technical means: including a head tube, on which a socket is inserted, and on which a pair of pliers are hinged, each of the pliers has a hinge disc fixed at its edge, and the two hinge discs and the socket are coaxially connected to form a shearing hinge structure, a shearing arm extends outward from the hinge disc, and a pull ring is sleeved at the end of the shearing arm, and a traction shaft extends from the pull rings on both sides toward the inside of the socket; A support plate is fixed in the middle of the shearing arm, and a support rod is connected between the two support plates. The support rod is a metal strip in a shearing and folding shape, and a pneumatic tube is provided between the middle of the support rod and the traction shaft. One side of the pliers head has a blade groove on its inner side, and a cutting blade is fitted into the blade groove and fitted into the mouth of the pliers head. A blade spool connected to the cutting blade is installed in the blade groove, and the core of the blade spool is an elastic winding structure. A traction chain is installed on the outside of the blade spool.

[0005] A further preferred embodiment: the shearing arm is an L-shaped end arm, and the shearing arms on both sides form an angled lever arm structure with the pull ring.

[0006] A further preferred embodiment: the axial position of the connection end between the strut plate and the shear arm has two axial holes that can be switched horizontally, and the end of the strut plate and the surface of the shear arm are interference-fitted.

[0007] A further preferred embodiment: the pneumatic tube has two chambers spaced apart, connected by an inner cavity at the bottom; the traction shaft is connected to one end of the pneumatic tube; a lifting rod is inserted into the other end of the pneumatic tube; the axial movement directions of the traction shaft and the lifting rod are opposite, and the lifting rod is hinged and fixed to the middle of the support rod.

[0008] A further preferred embodiment: the blade drum is connected to the lifting rod via a chain belt.

[0009] A further preferred embodiment: the cutting surface of the cutting blade is a thickened rigid cutting surface, and the travel of the cutting blade matches the engagement hinge travel of the pliers head.

[0010] The beneficial effects of this utility model are: This lung cancer tumor biopsy forceps assembly features a cutting blade structure at the biting part of the forceps jaws for traction drive. This allows the forceps to further bite and remove tumor tissue using the cutting blade at the end of the jaws after biting. The biting action of the forceps jaws ensures complete removal of tumor tissue during sampling, preventing tissue adhesion and tearing damage to surrounding tissues. In conjunction with the struts in the hinged biting arm, the structure works with the adjustable struts of the shearing arm and traction shaft. The rigidity of the struts enhances the strength of the strut arm during hinged movement, thus reinforcing the biting structure of the forceps and improving the safety of the forceps assembly. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the pliers head structure of this utility model; Figure 3 This is a schematic diagram of the pliers head in the open state of this utility model; Figure 4 This is a schematic diagram of the clamping state structure of the pliers head of this utility model; Figure 5 This is a schematic diagram of the internal planar structure of the pneumatic tube of this utility model.

[0013] Figures 1-5 In the middle: head tube 1, clamp seat 2, clamp head 3, scissor arm 4, pull ring 5, blade groove 6, hinge shaft disc 7, support rod disc 8, cutting blade 9, traction shaft 10, lifting rod 11, support rod 12, blade reel 13, pneumatic tube 14, inner cavity 15. Detailed Implementation

[0014] To better understand the above-mentioned objectives, features, and advantages of this utility model, the following description is provided in conjunction with the accompanying drawings. Figures 1-5 The present invention will be further described in detail below with specific embodiments. The following embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any modifications and refinements made without departing from the scope of the present invention are within the patent protection scope of the present invention.

[0015] A lung cancer tumor biopsy forceps assembly includes a head tube 1, a base 2 inserted into the head tube 1, a pair of forceps 3 hinged to the base 2, a hinge disk 7 fixed to the edge of each forceps 3, and the two hinge disks 7 and the base 2 are coaxially connected to form a shearing hinge structure. A shearing arm 4 extends outward from the hinge disk 7, and a pull ring 5 is sleeved at the end of the shearing arm 4. A traction shaft 10 extends from the pull rings 5 ​​on both sides into the base 2. A support plate 8 is fixed in the middle of the shear arm 4, and a support rod 12 is connected between the two support plates 8. The support rod 12 is a metal strip in a shearing and folding shape, and a pneumatic pipe 14 is provided between the middle of the support rod 12 and the traction shaft 10. One side of the pliers head 3 has a blade groove 6 on its inner side, and a cutting blade 9 is provided in the blade groove 6 and fits against the mouth of the pliers head 3. A blade drum 13 connected to the cutting blade 9 is provided in the blade groove 6, and the core of the winding shaft of the blade drum 13 is an elastic winding structure. A traction and pulling chain is provided on the outside of the blade drum 13. This lung cancer tumor biopsy forceps assembly, based on existing forceps assemblies that achieve the biting action through hinged shearing force, specifically uses a traction shaft 10 connected to the handle at the end of the biopsy forceps. The doctor's gripping action stretches the traction shaft 10, and the traction force of the stretched traction shaft 10 acts on the pull ring 5, thereby pulling one end of the shearing arm 4 along the axial direction through the pull ring 5. Figure 3 , 4 As shown, since the other end of the shearing arm 4 is fixed in the axial position of the clamp seat 2, that is, after one end of the shearing arm 4 is subjected to traction force, the hinge disk 7 at the other end will make a shearing action along the clamp seat 2. The action of the hinge disk 7 is reflected on the clamp head 3, so that the two clamp heads 3 make a biting action along the clamp seat 2. The biting action of the clamp mouth edge of the clamp head 3 is used to bite and remove the tumor tissue for sampling. Compared to existing clamping head assemblies, this assembly has a support rod 12 structure at the end of the clamping head 3 that matches the shearing force arm of the shearing arm 4. The support rod 12 is connected to the left and right shearing arms 4 through the support rod discs 8 at the left and right ends. The support rod 12 itself supports the spacing between the center positions of the expanding shearing arms 4 through a rigid structure. It works in conjunction with the shearing action of the shearing arms 4 to strengthen the shearing force of the shearing arms 4. It also works in conjunction with the change in the axial position of the traction shaft 10 during the shearing action to fold and expand synchronously, so as to further utilize the movement of the axial structure of the traction shaft 10 to support the support rod 12. The support rod 12 reinforces the shearing force of the shearing arms 4, thereby improving the biting force of the clamping action of the clamping head 3 and the response time when the clamping head 3 resets, thus improving the structural stability. Based on the above, the pliers head 3 is further provided with a cutting blade 9 that matches the biting action. The cutting blade 9 is mainly stretched by the blade reel 13 to retract inside the pliers head 3. The winding shaft of the blade reel 13 has a counter-directional winding structure, that is, when the chain and the cutting blade 9 are connected at both ends of the blade reel 13, the chain overcomes the elasticity of the blade reel 13, causing the connecting section of the cutting blade 9 at the other end to retract synchronously. When the chain retracts and resets, the cutting blade 9 is simultaneously reset by the elastic core of the winding shaft of the blade reel 13. Figure 3 Event until Figure 4 During the biting action, the cutting blade 9 will penetrate into the other side of the jaw 3 in a radial cutting shape along the inner wall of the jaw 3 to further remove the tissue ends between the biting parts of the jaw 3, thereby improving the cutting and separation effect of the jaw assembly. Among them, the shearing arm 4 is an L-shaped end arm, and the two shearing arms 4 on both sides and the pull ring 5 form an angled lever arm structure. The angled lever arm that matches the shearing arm 4, the pull ring 5, and the traction shaft 10 can ensure the magnitude of the traction force exerted by the traction shaft 10 on the shearing arm 4 through the pull ring 5 when it is stretched from the middle, so as to improve the shearing force of the shearing arm 4 when it performs the shearing action. Furthermore, the axial position of the connection end between the strut plate 8 and the shearing arm 4 is provided with two horizontally switchable shaft holes, and the end of the strut plate 8 is interference-fitted with the surface of the shearing arm 4. The strut plate 8, which can be axially translated, can adapt to the displacement of the middle position of the shearing arm 4 during the shearing activity. It is used in conjunction with the position of the strut 12 after opening and closing to fix the strut plate 8 to the shearing arm 4, so as to avoid the structure of the strut 12 affecting the normal opening and closing flexibility of the shearing arm 4. Furthermore, the pneumatic tube 14 has two chambers spaced apart vertically, connected by an inner cavity 15 at the bottom. A traction shaft 10 is connected to one end of the pneumatic tube 14, and a lifting rod 11 is inserted into the other end of the pneumatic tube 14. The axial movement directions of the traction shaft 10 and the lifting rod 11 are opposite, and the lifting rod 11 is hinged and fixed to the middle of the support rod 12. Figure 5As shown, the pneumatic tube 14 structure is used as the support connection structure in the middle of the strut 12. It is mainly adapted to the opposite movement changes by the relatively movable lifting rod 11 and the traction shaft 10. That is, when the end of the traction shaft 10 is stretched outward, the movement of the traction shaft 10 will squeeze the chamber connected to it, so that the gas in the chamber acts on the other side chamber along the inner cavity 15, so as to push the lifting rod 11 out from the other direction through air pressure, so that the strut 12 can be supported by the lifting rod 11 during the axial stretching process of the traction shaft 10. Based on the above, the blade drum 13 is connected to the lifting rod 11 via a chain belt. The lifting rod 11 is connected to the chain belt, that is, after the traction shaft 10 is stretched, the chain belt is released synchronously through the axial movement of the lifting rod 11 to drive the winding shaft core of the blade drum 13 to reset. In normal condition, the lifting rod 11 is used to pull the chain belt to retract the winding shaft core in the blade drum 13. The pneumatic tube 14 is used to connect the movement of the traction shaft 10, the movement of the support rod 12 and the movement of the blade drum 13 as a whole, so as to improve the linkage and synchronization effect between various components of the structure. Furthermore, the cutting surface of the cutting blade 9 is a thickened rigid cutting surface, and the travel of the cutting blade 9 matches the travel of the biting hinge of the pliers head 3. The rigid cutting surface ensures the cutting effect of the cutting action of the cutting blade 9. Combined with the relatively flexible blade connecting section with the blade roll 13, the cutting action under the biting action is realized.

[0016] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A lung cancer tumor biopsy forceps assembly, characterized in that: Includes a head tube (1), on which a socket (2) is inserted and provided, and on which a pair of pliers (3) are hinged, each of the pliers (3) has a hinge disc (7) fixed on its edge, and the two hinge discs (7) and the socket (2) are coaxially connected to form a shearing hinge structure, the outer side of the hinge disc (7) extends to form a shearing arm (4), and the end of the shearing arm (4) is sleeved with a pull ring (5), and the two pull rings (5) extend into the socket (2) with a traction shaft (10); The shear arm (4) has a support plate (8) fixed in the middle, and a support rod (12) is connected between the two support plates (8). The support rod (12) is a metal strip in the shape of shearing and folding, and a pneumatic tube (14) is provided between the middle of the support rod (12) and the traction shaft (10). One side of the pliers head (3) has a blade groove (6) on its inner side, and a cutting blade (9) is provided in the blade groove (6) and fits against the mouth of the pliers head (3). A blade spool (13) connected to the cutting blade (9) is provided in the blade groove (6), and the core of the winding shaft of the blade spool (13) is an elastic winding structure. A traction chain is provided on the outside of the blade spool (13).

2. The lung cancer tumor biopsy forceps assembly according to claim 1, characterized in that: The shearing arm (4) is an L-shaped end arm, and the shearing arms (4) on both sides form an angled lever arm structure with the pull ring (5).

3. The lung cancer tumor biopsy forceps assembly according to claim 1, characterized in that: The axial position of the connection end between the support plate (8) and the shear arm (4) has two shaft holes that can be switched horizontally, and the end of the support plate (8) and the surface of the shear arm (4) are interference-fitted.

4. The lung cancer tumor biopsy forceps assembly according to claim 1, characterized in that: The pneumatic tube (14) has two chambers separated by an upper and lower section. The two chambers are connected by an inner cavity (15) at the bottom. The traction shaft (10) is connected to one end of the pneumatic tube (14), and a lifting rod (11) is inserted into the other end of the pneumatic tube (14). The axial movement directions of the traction shaft (10) and the lifting rod (11) are opposite, and the lifting rod (11) is hinged and fixed to the middle of the support rod (12).

5. The lung cancer tumor biopsy forceps assembly according to claim 4, characterized in that: The blade reel (13) is connected to the lifting rod (11) via a chain.

6. The lung cancer tumor biopsy forceps assembly according to claim 1, characterized in that: The cutting surface of the cutting blade (9) is a thickened rigid cutting surface, and the moving stroke of the cutting blade (9) matches the biting hinge moving stroke of the pliers head (3).

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