An endoscopic biopsy device for obtaining a sample of human tissue

Abstract

The utility model relates to a kind of endoscopic biopsy device for obtaining human tissue sample, belong to medical instrument technical field, solve the process cumbersome or need to be powered high cost problem caused by endoscopic biopsy forceps cutting first and then grabbing tissue in prior art.The utility model includes puncture clamping head, control rod and support pipe, puncture clamping head is located in the one end of support pipe, control rod is located in support pipe, and the one end of control rod is connected with puncture clamping head, and the other end is worn out support pipe;Puncture clamping head includes puncture clamping part, puncture clamping part is at least divided into two petals, puncture clamping part is closed state and is cone structure, the middle part of puncture clamping part has outward arc, the inside of puncture clamping part forms inner chamber for containing tissue, control rod is used to control the opening and closing of puncture clamping part to realize puncture and clamping function.The utility model realizes the dual function of puncture and clamping, simplifies operation process, and does not need to be powered, reduces cost.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an endoscopic biopsy device for obtaining human tissue samples. Background Technology

[0002] Endoscopic biopsy forceps are medical devices specifically designed to obtain tissue samples. Their structure includes versatile forceps heads made of biocompatible materials such as stainless steel, flexible forceps arms, easily controlled operating levers, and endoscope-compatible connecting tubes. This device is highly efficient and adaptable, enabling biopsies at various sites in the digestive tract. It is also optimized to minimize damage to surrounding tissues and reduce the risk of complications. Current submucosal biopsy strategies involve incision followed by forceps retrieval, requiring two separate devices, resulting in a lengthy puncture and retrieval process and increased patient discomfort. Internationally, integrated biopsy devices (INFORCE) have been developed. TM It requires electricity, which is costly. Utility Model Content

[0003] Based on the above analysis, the present invention aims to provide an endoscopic biopsy device for obtaining human tissue samples, in order to solve the problems of cumbersome procedures or high costs caused by the existing endoscopic biopsy forceps requiring cutting and then grasping tissue.

[0004] The objective of this utility model is mainly achieved through the following technical solutions:

[0005] An endoscopic biopsy device for obtaining human tissue samples includes a puncture clamp, a control rod, and a support tube. The puncture clamp is disposed at one end of the support tube, and the control rod is disposed inside the support tube. One end of the control rod is connected to the puncture clamp, and the other end extends out of the support tube.

[0006] The puncture and retrieval head includes a puncture and retrieval section, which is at least divided into two halves. The puncture and retrieval section has a conical structure when closed. The middle part of the puncture and retrieval section has an outward arc. The interior of the puncture and retrieval section forms an inner cavity for holding tissue. The control rod is used to control the opening and closing of the puncture and retrieval section to achieve the puncture and retrieval functions.

[0007] Furthermore, each of the puncture and clamping parts is divided into two halves, namely a first opening and closing halves and a second opening and closing halves. The first opening and closing halves are provided with a first cutting part, and the second opening and closing halves are provided with a second cutting part.

[0008] Furthermore, the puncture clamping head also includes a connecting part, which is divided into three or four third opening and closing petals, and the third opening and closing petals are connected to the connecting part.

[0009] Furthermore, one side of the connecting part is provided with a toothed portion, and the other side of the connecting part is hinged to the end of the support tube.

[0010] Furthermore, the end of the control lever is provided with a rack portion, which meshes with the toothed portion.

[0011] Furthermore, the first cutting portion is disposed on the inner edge of the first opening and closing flap and extends toward the second opening and closing flap, and the second cutting portion is disposed on the inner edge of the second opening and closing flap and extends toward the first opening and closing flap.

[0012] Furthermore, the first cutting portion and the second cutting portion are arranged alternately.

[0013] Furthermore, the puncture clamping head also includes a connecting portion, which includes a first connecting plate and a second connecting plate. The first connecting plate is connected to the first opening and closing flap, and the second connecting plate is connected to the second opening and closing flap.

[0014] Furthermore, the first opening and closing flap is provided with a first gripping tooth, and the second opening and closing flap is provided with a second gripping tooth.

[0015] Furthermore, the third opening and closing flap is provided with a third gripping tooth.

[0016] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0017] (1) The endoscopic biopsy device of this utility model includes a puncture and retrieval head, which is a cone-shaped structure when closed. The middle part of the puncture and retrieval head has an outward arc, which expands the inner cavity of the puncture and retrieval head. The puncture and retrieval head is divided into at least two halves. When puncturing, the control rod controls the closure of the halves of the puncture and retrieval head to form a complete cone-shaped structure. When grasping tissue, the control rod is used to separate the puncture and retrieval head and then close it to store the grasped tissue in the inner cavity of the puncture and retrieval head. Puncture is performed using the tip of the puncture and retrieval head instead of cutting with a linear blade, which can reduce trauma. The inner cavity of the puncture and retrieval head is used to hold the grasped tissue, realizing the dual functions of puncture and retrieval, simplifying the operation process. Moreover, this device is a mechanical structure and does not require electricity, which reduces costs.

[0018] (2) The opening and closing flap of this utility model is provided with gripping teeth and the inner edge of the opening and closing flap is provided with a cutting part. When the opening and closing flap is closed, the gripping teeth "bite" the tissue and the cutting part cuts the tissue, which can ensure that the tissue does not slip during the gripping process.

[0019] (3) The front end of the control rod of this utility model is provided with a rack part, and the inner side of the connecting part is provided with a toothed part that meshes with the rack part. The connecting part is hinged to the front end of the support tube. The opening and closing of the third opening and closing flap is controlled by the forward or backward movement of the control rod, so as to carry out the piercing and clamping operation. The opening and closing of the third opening and closing flap is controlled by the meshing of the rack part and the toothed part, which can reduce the transmission gap and make the transmission process more stable and reliable.

[0020] (4) The endoscopic biopsy device of this invention does not require electricity and can be used through the standard biopsy working channel of a gastrointestinal endoscope. It has the functions of lesion puncture and tissue grasping, and can realize biopsy of submucosal lesions or tissue lesions around the digestive tract, especially the biopsy of cyst wall tissue of cystic lesions. The device is suitable for lesions of all sizes, and the biopsy wound is small, avoiding the risk of perforation. It uses a physical and mechanical structure design, does not require electricity, has low cost, and is easy to promote and popularize.

[0021] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing this invention. The objectives and other advantages of this invention can be realized and obtained from the details specifically pointed out in the text and accompanying drawings. Attached Figure Description

[0022] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0023] Figure 1 This is a schematic diagram of the endoscopic biopsy device in specific embodiment 1;

[0024] Figure 2 This is a schematic diagram of the endoscopic biopsy device without a support tube in specific embodiment 1;

[0025] Figure 3 This is a schematic diagram of the puncture and clamping part in specific embodiment 1;

[0026] Figure 4 This is a schematic diagram of the structure of the first opening and closing lobe in specific embodiment 1;

[0027] Figure 5 This is a schematic diagram of the structure of the second opening and closing lobe in specific embodiment 1;

[0028] Figure 6 This is a schematic diagram of the control lever in specific embodiment 1;

[0029] Figure 7 This is a schematic diagram of the support tube in specific embodiment 1;

[0030] Figure 8 This is a schematic diagram of the structure of the third connecting plate in specific embodiment 1;

[0031] Figure 9 This is a schematic diagram of the cross-sectional structure of the puncture and clamping part in specific embodiment 2;

[0032] Figure 10 This is a schematic diagram of the endoscopic biopsy device in specific embodiment 3;

[0033] Figure 11 This is a schematic diagram of the structure of the third opening and closing lobe in specific embodiment 3;

[0034] Figure 12 This is a schematic diagram of the control lever in specific embodiment 3;

[0035] Figure 13 This is a schematic diagram of the support tube in specific embodiment 3;

[0036] Figure 14 This is a schematic diagram of the third opening and closing petal in specific embodiment 4.

[0037] Figure label:

[0038] 1-Puncture clamping head; 11-Puncture clamping part; 111-First opening and closing flap; 112-Second opening and closing flap; 113-First cutting part; 114-Second cutting part; 115-First clamping tooth; 116-Second clamping tooth; 12-Inner cavity; 13-Connecting part; 131-First connecting plate; 132-Second connecting plate; 133-First through hole; 134-Second through hole; 135-Third through hole; 136-Fourth through hole; 2-Control rod; 3-Support tube; 4-Connecting shaft; 5-Third connecting plate; 6-Fourth connecting plate;

[0039] 101-Third opening and closing flap; 137-Toothed part; 21-Rack part; 117-Third gripping tooth. Detailed Implementation

[0040] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0041] Example 1

[0042] A specific embodiment of this utility model, combined with Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7As shown, an endoscopic biopsy device for obtaining human tissue samples is disclosed, including a puncture and clamping head 1, a control rod 2, and a support tube 3. The puncture and clamping head 1 is located at one end of the support tube 3, and the control rod 2 is located inside the support tube 3. One end of the control rod 2 is connected to the puncture and clamping head 1, and the other end extends out of the support tube 3. The puncture and clamping head 1 includes a puncture and clamping portion 11, which has a closed, cone-shaped structure. The puncture and clamping portion 11 extends outward from the tip of the cone structure towards the tail end and then closes inward, so that the middle part of the puncture and clamping portion 11 has an outward arc shape. The puncture and clamping portion 11 is at least divided into two equal parts. The control rod 2 is used to control the opening and closing of the puncture and clamping portion 11 to realize the puncture and clamping functions. The interior of the puncture and clamping portion 11 forms an inner cavity 12 for holding tissue.

[0043] Compared with the prior art, the endoscopic biopsy device provided in this embodiment includes a puncture and retrieval head 1 comprising a puncture and retrieval part 11. The puncture and retrieval part 11 has a conical structure in the closed state, and the middle part of the puncture and retrieval part 11 has an outward arc, which expands the inner cavity 12 of the puncture and retrieval part 11. The puncture and retrieval part 11 is divided into at least two equal parts. When puncturing, the control rod 2 controls the closure of the divided parts of the puncture and retrieval part 11 to form a complete conical structure. When grasping tissue, the control rod 2 is used to separate the puncture and retrieval parts of the puncture and retrieval part 11 and then close it to store the grasped tissue in the inner cavity 12 of the puncture and retrieval part 11. Using the tip of the puncture and gripping part 11 for puncture, rather than cutting with a linear blade, can reduce trauma. The inner cavity 12 of the puncture and gripping part 11 is used to hold the grasped tissue, realizing the dual functions of puncture and gripping, simplifying the operation process. Moreover, this embodiment is a mechanical structure that does not require electricity, thus reducing costs.

[0044] In this embodiment, as Figure 1 and Figure 2 As shown, the puncture and clamping part 11 is divided into two halves, specifically a first opening and closing halves 111 and a second opening and closing halves 112. The first opening and closing halves 111 and the second opening and closing halves 112 are opened and closed under the action of the control rod 2. For example, when the control rod 2 extends forward, the first opening and closing halves 111 and the second opening and closing halves 112 unfold, and when the control rod 2 is pulled backward, the first opening and closing halves 111 and the second opening and closing halves 112 close to form a complete cone-shaped structure.

[0045] Preferably, the first opening and closing flap 111 and the second opening and closing flap 112 have the same structure.

[0046] To facilitate the gripping of tissues, such as Figure 2As shown, the first opening and closing flap 111 is provided with a first cutting portion 113, and the second opening and closing flap 112 is provided with a second cutting portion 114. The first cutting portion 113 is disposed on the inner edge of the first opening and closing flap 111 and extends toward the second opening and closing flap 112, and the second cutting portion 114 is disposed on the inner edge of the second opening and closing flap 112 and extends toward the first opening and closing flap 111, and the first cutting portion 113 and the second cutting portion 114 are staggered. When the first opening and closing flap 111 and the second opening and closing flap 112 are closed, the first cutting portion 113 is located inside the second cutting portion 114, or the second cutting portion 114 is located inside the first cutting portion 113, and the tissue is cut by the staggered cutting portion 113 and the second cutting portion 114.

[0047] In order to achieve the opening and closing control of the first opening and closing lobe 111 and the second opening and closing lobe 112, such as Figure 1 As shown, the puncture and retrieval head 1 also includes a connecting portion 13, which includes a first connecting plate 131 and a second connecting plate 132. One end of the first connecting plate 131 is connected to the rear end of the first opening and closing flap 111, and the other end of the first connecting plate 131 is inclined toward the second opening and closing flap 112 and extends further toward the rear end of the second opening and closing flap 112. One end of the second connecting plate 132 is connected to the rear end of the second opening and closing flap 112, and the other end of the second connecting plate 132 is inclined toward the first opening and closing flap 111 and extends further toward the rear end of the first opening and closing flap 111.

[0048] like Figure 4 and Figure 5 As shown, a first through hole 133 is provided in the middle of the first connecting plate 131, a second through hole 134 is provided at the end of the first connecting plate 131, a third through hole 135 is provided in the middle of the second connecting plate 132, and a fourth through hole 136 is provided at the end of the second connecting plate 132. Figure 1 and Figure 2 As shown, the endoscopic biopsy device also includes a connecting shaft 4, which passes through the first through hole 133 and the third through hole 135, enabling the first connecting plate 131 and the second connecting plate 132 to be rotatably connected to the connecting shaft 4. Both ends of the connecting shaft 4 are fixedly connected to the ends of the support tube 3.

[0049] like Figure 2 and Figure 8 As shown, the endoscopic biopsy device also includes a third connecting plate 5 and a fourth connecting plate 6. One end of the third connecting plate 5 is hinged to one end of the first connecting plate 131, and the other end of the third connecting plate 5 is hinged to the front end of the control rod 2. One end of the fourth connecting plate 6 is hinged to one end of the second connecting plate 132, and the other end of the fourth connecting plate 6 is hinged to the front end of the control rod 2.

[0050] Preferably, the third connecting plate 5 and the fourth connecting plate 6 have the same structure.

[0051] Since both the third connecting plate 5 and the fourth connecting plate 6 are hinged to the control rod 2, the third connecting plate 5 is hinged to the first connecting plate 131, and the fourth connecting plate 6 is hinged to the second connecting plate 132, and the first connecting plate 131 and the second connecting plate 132 are hinged to the connecting shaft 4, when the rear end of the control rod 2 is pushed forward, the first opening and closing flap 111 and the second opening and closing flap 112 unfold. When the rear end of the control rod 2 is pulled backward, the first opening and closing flap 111 and the second opening and closing flap 112 close. During the closing process, the tissue is cut off and preserved in the inner cavity 12 using the first cutting part 113 and the second cutting part 114. A conical structure is formed in the closed state of the first opening and closing flap 111 and the second opening and closing flap 112, which is conducive to puncture operations.

[0052] Example 2

[0053] Another specific embodiment of this utility model is as follows: Figure 9 As shown, an endoscopic biopsy device for obtaining human tissue samples is disclosed. Based on Embodiment 1, a first grasping tooth 115 is provided in the first opening and closing flap 111, and a second grasping tooth 116 is provided in the second opening and closing flap 112. When the first opening and closing flap 111 and the second opening and closing flap 112 are closed, the first grasping tooth 115 and the second grasping tooth 116 "bite" the tissue and cut it with the first cutting part 113 and the second cutting part 114, which can ensure that the tissue does not slip during the grasping process.

[0054] Example 3

[0055] Another specific embodiment of this utility model is as follows: Figure 10 As shown, an endoscopic biopsy device for obtaining human tissue samples is disclosed. The difference from Embodiment 1 or 2 is that the puncture and gripping section 11 is divided into three or four lobes. For ease of description, the lobes of the puncture and gripping section 11 are referred to as the third opening and closing lobes 101. Multiple third opening and closing lobes 101 merge to form a complete conical structure, and multiple third opening and closing lobes 101 close to form an inner cavity 12. The rear end of the third opening and closing lobes 101 is connected to the connecting section 13.

[0056] To achieve the opening and closing of multiple third opening and closing lobes 101, such as Figure 11 , Figure 12 and Figure 13As shown, one side edge of the connecting part 13 is provided with a toothed portion 137, which is located on the inner side of the connecting part 13, referring to the inner cavity 12 side of the puncture and clamping part 11. The other side of the connecting part 13 is hinged to the end (front end) of the support tube 3. The end (front end) of the control rod 2 is provided with a rack portion 21, the number of rack portions 21 being the same as the number of third opening and closing flaps 101. The rack portions 21 engage with the toothed portion 137. Exemplarily, when the control rod 2 is pushed forward, the three third opening and closing flaps 101 close into a complete conical structure, using the tip of the cone for puncture. When the control rod 2 is pulled backward, the three third opening and closing flaps 101 unfold, and then are controlled to close, using the staggered first cutting portion 113 and second cutting portion 114 to cut the tissue, and the cut tissue is retained in the inner cavity 12 of the puncture and clamping part 11.

[0057] In this embodiment, the front end of the control rod 2 is provided with a rack portion 21, and the inner side of the connecting portion 13 is provided with a toothed portion 137 that meshes with the rack portion 21. The connecting portion 13 is hinged to the front end of the support tube 3. The opening and closing of the third opening and closing flap 101 is controlled by moving the control rod 2 forward or backward, thereby performing piercing and clamping operations. By controlling the opening and closing of the third opening and closing flap 101 through the meshing of the rack portion 21 and the toothed portion 137, the transmission gap can be reduced, making the transmission process more stable and reliable.

[0058] Example 4

[0059] Another specific embodiment of this utility model is as follows: Figure 14 As shown, an endoscopic biopsy device for obtaining human tissue samples is disclosed. Based on Example 3, a third gripping tooth 117 is provided in the third opening and closing flap 101. When the third opening and closing flap 101 is closed, the third gripping tooth 117 "bites" the tissue and cuts it with the cutting part, which can ensure that the tissue does not slip during the gripping process.

[0060] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. An endoscopic biopsy device for obtaining human tissue samples, characterized in that, It includes a puncture clamp (1), a control rod (2) and a support tube (3). The puncture clamp (1) is located at one end of the support tube (3), and the control rod (2) is located inside the support tube (3). One end of the control rod (2) is connected to the puncture clamp (1), and the other end extends out of the support tube (3). The puncture clamping head (1) includes a puncture clamping part (11), which is divided into at least two halves. The puncture clamping part (11) has a conical structure when closed. The middle part of the puncture clamping part (11) has an outward arc. The interior of the puncture clamping part (11) forms an inner cavity (12) for holding tissue. The control rod (2) is used to control the opening and closing of the puncture clamping part (11) to realize the puncture and clamping functions. The puncture and clamping part (11) is divided into two parts, namely a first opening and closing part (111) and a second opening and closing part (112). The first opening and closing part (111) is provided with a first cutting part (113), and the second opening and closing part (112) is provided with a second cutting part (114). The first cutting part (113) is located on the inner edge of the first opening and closing part (111) and extends toward the second opening and closing part (112). The second cutting part (114) is located on the inner edge of the second opening and closing part (112) and extends toward the first opening and closing part (111). The first opening and closing part (111) is provided with a first clamping tooth (115), and the second opening and closing part (112) is provided with a second clamping tooth (116).

2. The endoscopic biopsy device for obtaining human tissue samples according to claim 1, characterized in that, The puncture clamping head (1) also includes a connecting part (13), and the puncture clamping part (11) is divided into three or four third opening and closing petals (101), which are connected to the connecting part (13).

3. The endoscopic biopsy device for obtaining human tissue samples according to claim 2, characterized in that, One side of the connecting part (13) is provided with a toothed part (137), and the other side of the connecting part (13) is hinged to the end of the support tube (3).

4. The endoscopic biopsy device for obtaining human tissue samples according to claim 3, characterized in that, The end of the control lever (2) is provided with a rack portion (21), which meshes with the toothed portion (137).

5. The endoscopic biopsy device for obtaining human tissue samples according to claim 1, characterized in that, The first cutting section (113) and the second cutting section (114) are arranged alternately.

6. The endoscopic biopsy device for obtaining human tissue samples according to claim 1, characterized in that, The puncture clamp (1) further includes a connecting part (13), which includes a first connecting plate (131) and a second connecting plate (132). The first connecting plate (131) is connected to the first opening and closing flap (111), and the second connecting plate (132) is connected to the second opening and closing flap (112).

7. The endoscopic biopsy device for obtaining human tissue samples according to any one of claims 2-4, characterized in that, The third opening and closing flap (101) is provided with a third gripping tooth (117).

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