A biopsy sampler operating part and a biopsy sampler having the same

Abstract

The present invention provides a biopsy sampler operating part with a limiting function and a biopsy sampler having the same. The biopsy sampler operating part comprises: a main body (4), which is generally columnar; a sliding part (2), which is a hollow cylindrical structure and surrounds the outer periphery of the main body, and can slide in both directions along the main body (4) relative to the outer periphery of the main body (4) in a first direction and a second direction opposite to the first direction, a first fixing part is provided at one end of the outer periphery of the sliding part (2) and a second fixing part is provided at the other end of the outer periphery of the sliding part (2); a first limiting part, which can limit the sliding part (2) from sliding along the main body relative to the outer periphery of the main body in one of the first direction and the second direction by contacting with the outer periphery of the main body; and a second limiting part, which can limit the sliding part (2) from sliding along the main body relative to the outer periphery of the main body in the other of the first direction and the second direction by contacting with the outer periphery of the main body.

Description

Technical Field

[0001] The present disclosure relates to the technical field of medical instruments, and in particular to the field of biopsy samplers, and specifically provides a biopsy sampler operating unit, a biopsy sampler equipped with the same, and an endoscope. Background Art

[0002] With the widespread application of endoscopic technology, biopsy forceps have gradually become an indispensable tool in endoscopic examinations. Endoscopes such as gastroscopes, colonoscopes, and bronchoscopes can observe and diagnose deep into the human body without cutting the surface of the human body. Together with biopsy forceps, they can accurately grasp these tissue samples that are difficult to directly touch. At present, in clinical medicine, biopsy forceps are often used to grasp gastrointestinal mucosal specimens during gastrointestinal endoscopy. When the forceps head of the biopsy forceps enters the inner wall of the endoscope through the biopsy channel, the operator often touches the slip ring of the handle in advance or uses excessive force due to improper use, causing damage to the inner surface of the endoscope, increasing the maintenance frequency of the endoscope and increasing medical costs; in addition, after medical staff collect samples from the patient's body tissue, they touch the finger ring of the handle in advance or use excessive force, causing damage to the inner surface of the endoscope; when the biopsy forceps remove the biopsy tissue, they accidentally touch the finger ring of the handle, causing the tissue sampled by the biopsy forceps to be lost in the patient's body, causing contamination.

[0003] The main reason for the above problems is that there is no limiting structure in the handle of the biopsy forceps, which leads to unexpected risks. Summary of the invention

[0004] In order to solve the problems existing in the above-mentioned prior art, the present invention provides a biopsy sampler operating part, which is used to limit the forward and backward movement of the handle by adding a spring sheet on the finger ring, and the position of the spring sheet is designed in consideration of the doctor's operating habits. The doctor's hand presses the finger ring inward, triggering the spring sheet that limits its inward movement to open, and smoothly pulls the finger ring. After reaching the desired position, the finger is released, the spring sheet is reset, and the finger ring remains stationary. The designed spring sheet has low cost and good effect. The design is ingenious and easy to install.

[0005] In a first aspect, some embodiments of the present invention provide a biopsy sampler operating portion with a limiting function, comprising: a main body portion, which is generally columnar; a sliding portion, which is a hollow cylindrical structure and surrounds the outer circumference of the main body portion, and can slide bidirectionally along the main body portion relative to the outer circumference in a first direction and a second direction opposite to the first direction, and a first fixing portion is provided at one end of the outer circumference of the sliding portion and a second fixing portion is provided at the other end of the outer circumference of the sliding portion; a first limiting portion, which is located at the first fixing portion of the outer circumference of the sliding portion, and can limit the sliding portion from sliding along the main body portion relative to the outer circumference of the main body portion in one of the first direction and the second direction by contacting the outer circumference of the main body portion; a second limiting portion, which is located at the second fixing portion of the outer circumference of the sliding portion, and can limit the sliding portion from sliding along the main body portion relative to the outer circumference of the main body portion in the other of the first direction and the second direction by contacting the outer circumference of the main body portion.

[0006] The embodiment of the present invention adopts two limiting parts to respectively limit the sliding of the sliding part in two directions, so that the biopsy sampler operating part is easy to install, low in cost and easy to use.

[0007] In some embodiments, the first limiting portion includes: a first elastic member, which is installed in the first cylindrical portion in the first fixed portion of the sliding portion and can rotate relative to the first cylindrical portion, one end of the first elastic member serves as a first limiting end and the other end serves as a first force-bearing end; a first force-applying member, which is installed in the first fixed portion and can apply force to the first force-bearing end of the first elastic member; the second limiting portion includes: a second elastic member, which is installed in the second cylindrical portion in the second fixed portion of the sliding portion and can rotate relative to the second cylindrical portion, one end of the second elastic member serves as a second limiting end and the other end serves as a second force-bearing end; a second force-applying member, which is installed in the second fixed portion and can apply force to the second force-bearing end of the second elastic member.

[0008] In some embodiments, the first force-applying member is a first spring, and the second force-applying member is a second spring; when the first force-bearing end is force-applied by the first spring, the first limiting end of the first elastic member contacts the outer periphery of the main body in an arc shape, thereby limiting the sliding part from sliding along the main body relative to the outer periphery of the main body in one of the first direction and the second direction; when the second force-bearing end is force-applied by the second spring, the second limiting end of the second elastic member contacts the outer periphery of the main body in an arc shape, thereby limiting the sliding part from sliding along the main body relative to the outer periphery of the main body in the other of the first direction and the second direction.

[0009] In some embodiments, when the sliding portion is restricted to slide in one of the first direction and the second direction along the main body relative to the outer circumference of the main body, the first force-bearing end is subjected to force from a finger, causing the first elastic member to rotate on the first cylindrical portion in a manner that overcomes the force of the first spring, thereby causing the first limiting end to leave the outer circumference of the main body, thereby releasing the restriction on the sliding portion to slide in one of the first direction and the second direction along the main body relative to the outer circumference of the main body; when the sliding portion is restricted to slide in the other of the first direction and the second direction along the main body relative to the outer circumference of the main body, the second force-bearing end is subjected to force from a finger, causing the second elastic member to rotate on the second cylindrical portion in a manner that overcomes the force of the second spring, thereby causing the second limiting end to leave the outer circumference of the main body, thereby releasing the restriction on the sliding portion to slide in the other of the first direction and the second direction along the main body relative to the outer circumference of the main body.

[0010] In some embodiments, the first limiting portion includes: a first elastic member, which is installed in the first square axis portion in the first fixed portion of the sliding portion, one end of the first elastic member serves as a first limiting end and the other end serves as a first force-bearing end; a first force-applying member, which is installed in the first force-bearing end and passes through the first square axis portion and can apply force to the first limiting end of the first elastic member; the second limiting portion includes: a second elastic member, which is installed in the second square axis portion in the second fixed portion of the sliding portion, one end of the second elastic member serves as a second limiting end and the other end serves as a second force-bearing end; a second force-applying member, which is installed in the second force-bearing end and passes through the second square axis portion and can apply force to the second limiting end of the second elastic member (8A).

[0011] In some embodiments, the first force-applying member is a first ejector pin, and the second force-applying member is a second ejector pin; when the first limit end is not force-applied by the first ejector pin, the first limit end of the first elastic member contacts the outer periphery of the main body in an arc shape, thereby limiting the sliding portion from sliding along the main body relative to the outer periphery of the main body in one of the first direction and the second direction; when the second limit end is not force-applied by the second ejector pin, the second limit end of the second elastic member contacts the outer periphery of the main body in an arc shape, thereby limiting the sliding portion (2) from sliding along the main body relative to the outer periphery of the main body in one of the first direction and the second direction.

[0012] In some embodiments, when the sliding portion is restricted to slide in one of the first direction and the second direction along the main body relative to the outer circumference of the main body, the first force-bearing end is subjected to a force from a finger, so that the first force-bearing end drives the first ejector pin to move toward the first limit end, and the first ejector pin pushes the first limit end to make the first limit end leave the outer circumference of the main body, thereby releasing the restriction on the sliding portion to slide in one of the first direction and the second direction along the main body relative to the outer circumference of the main body; when the sliding portion is restricted to slide in the other of the first direction and the second direction along the main body relative to the outer circumference of the main body, the second force-bearing end is subjected to a force from a finger, so that the second force-bearing end drives the second ejector pin to move toward the second limit end, and the second ejector pin pushes the second limit end to make the second limit end leave the outer circumference of the main body, thereby releasing the restriction on the sliding portion to slide in the other of the first direction and the second direction along the main body relative to the outer circumference of the main body.

[0013] In some embodiments, the biopsy sampler operating part also includes: a third limiting part, which is located at the third fixing part of the outer periphery of the sliding part and is located on the opposite side of the first limiting part across the main body, and can limit the sliding part to slide along the main body relative to the outer periphery to one of the first direction and the second direction together with the first limiting part by contacting the outer periphery of the main body; a fourth limiting part, which is located at the fourth fixing part of the outer periphery of the sliding part and is located on the opposite side of the second limiting part across the main body (4), and can limit the sliding part to slide along the main body relative to the outer periphery to the other of the first direction and the second direction together with the second limiting part by contacting the outer periphery of the main body.

[0014] In a second aspect, some embodiments of the present invention provide a biopsy sampler, characterized in that it comprises: a sampling part; the above-mentioned biopsy sampler operating part; and a connecting part, which connects the sampling part and the biopsy sampler operating part.

[0015] In a third aspect, some embodiments of the present invention provide an endoscope having the above-mentioned biopsy sampler.

[0016] The present invention provides an operating part of a biopsy sampler, which is used to limit the forward and backward movement of a handle by adding a spring sheet on a finger ring, and the position of the spring sheet is designed in consideration of the doctor's operating habits. The doctor's hand pushes the finger ring inward, triggering the spring sheet that limits its inward movement to open, and smoothly pulls the finger ring. When the finger reaches the desired position, the finger is released, the spring sheet is reset, and the finger ring remains stationary. The designed spring sheet has low cost and good effect. The design is ingenious and easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings required for use in the description of the embodiments or the prior art are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of a biopsy sampler according to the present invention;

[0020] Figure 2 It is a schematic diagram of a first embodiment of an operating portion of a biopsy sampler according to the present invention;

[0021] Figure 3 A schematic diagram of a second embodiment of an operating portion of a biopsy sampler according to the present invention;

[0022] Figure 4 A three-dimensional diagram of a biopsy sampler according to the present invention;

[0023] Figure 5 It is a schematic diagram of the limit release state of the operating part of the biopsy sampler involved in the present invention;

[0024] Figure 6 It is a schematic diagram of the limiting state of the operating part of the biopsy sampler involved in the present invention;

[0025] Figure 7 It is a schematic diagram of the endoscope involved in the present invention.

[0026] In the figure: 1-finger ring, 2-sliding part, 3-first elastic member, 3A-second elastic member, 4-main body, 5-first spring, 5A-second spring, 7-connecting part, 6-sampling part, 8-first elastic member, 8A-second elastic member, 9-first ejector pin, 9A-second ejector pin, 10-first force-bearing end, 10A-second force-bearing end, 11-first cylindrical part, 11A-second cylindrical part, 12-first limiting end, 12A-second limiting end, 13-first force-bearing end, 13A-second force-bearing end, 14-first square shaft part, 14A-second square shaft part, 15-first limiting end, 15A-second limiting end, 21-first fixing part, 22-second fixing part, 23-third fixing part, 24-fourth fixing part, 100-biopsy sampler operating part. DETAILED DESCRIPTION

[0027] In order to more clearly understand the above-mentioned purposes, features and advantages of the present disclosure, the embodiments of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0029] In order to at least achieve the above-mentioned technical problems of low cost, good effect and simple installation, an embodiment of the present application provides a biopsy sampler operating part with a limiting function, including: a main body, which is generally columnar; a sliding part, which is a hollow cylindrical structure and surrounds the outer periphery of the main body, and can slide bidirectionally along the main body relative to the outer periphery of the main body in a first direction and a second direction opposite to the first direction, a first fixing part is provided at one end of the outer periphery of the sliding part and a second fixing part is provided at the other end of the outer periphery of the sliding part; a first limiting part, which is located at the first fixing part of the outer periphery of the sliding part, and can limit the sliding part from sliding along the main body relative to the outer periphery of the main body in one of the first direction and the second direction by contacting with the outer periphery of the main body; a second limiting part, which is located at the second fixing part of the outer periphery of the sliding part, and can limit the sliding part from sliding along the main body relative to the outer periphery of the main body in the other of the first direction and the second direction by contacting with the outer periphery of the main body.

[0030] It can be understood that the biopsy sampler operating part provided by the embodiment of the present application can effectively improve the technical defects of the operating part using related technologies.

[0031] Combine the following Figure 1-Figure 7 The above biopsy sampler operating unit is exemplified and the structure of the biopsy sampler operating unit is exemplified. It should be noted that those skilled in the art can design different biopsy sampler operating units based on the concept of the above biopsy sampler operating unit according to specific needs. Figure 1-Figure 7 device.

[0032] First, briefly introduce the Figure 1-Figure 7 corresponding components or units.

[0033] Reference numeral 1 is used to represent the finger ring, which is usually buckled into the finger ring by the doctor's thumb; reference numeral 2 is used to represent the sliding part, i.e. the slip ring, which is usually clamped by the doctor's index finger and middle finger; reference numerals 3 and 3A are used to represent the first elastic member and the second elastic member, respectively, both of which are limit springs, used to realize the main stopping component of the sliding part (slip ring) at the upper limit position on the main body; reference numeral 4 is used to represent the main body, i.e. the core rod of the operating part, used to provide a track for the sliding part to move back and forth; reference numerals 5 and 5A are used to represent the first spring and the second spring, which are used to realize the reset function of the first elastic member and the second elastic member, respectively; reference numeral 6 is used to represent the sampling part, i.e. the forceps head, which is the actuator of the biopsy sampler, used to take human tissue; reference numeral 7 is used to represent the connecting part; reference numerals 8 and 8A are used to represent the first elastic member and the second elastic member, respectively, both of which are limit springs, used to realize the main stopping component of the sliding part (slip ring) at the upper limit position on the main body; reference numerals 9 and 9A are used to represent the first ejector pin and the second ejector pin, respectively , respectively used to push out the first elastic member 8 and the second elastic member 8A; the figure numerals 10 and 10A are used to represent the first force-bearing end of the first elastic member 3 and the second force-bearing end of the second elastic member 3A; the figure numerals 11 and 11A are used to represent the first cylindrical portion and the second cylindrical portion; the figure numerals 12 and 12A are used to represent the first limiting end of the first elastic member 3 and the second limiting end of the second elastic member 3A; the figure numerals 13 and 13A are used to represent the first force-bearing end of the first elastic member 8 and the second force-bearing end of the second elastic member 8A; the figure numerals 14 and 14A are used to represent the first square shaft portion and the second square shaft portion; the figure numerals 15 and 15A are used to represent the first limiting end of the first elastic member 8 and the second limiting end of the second elastic member 8A; the figure numeral 21 is used to represent the first fixing portion; the figure numeral 22 is used to represent the second fixing portion; the figure numeral 23 is used to represent the third fixing portion; the figure numeral 24 is used to represent the fourth fixing portion; the figure numeral 100 is used to represent the biopsy sampler operating portion.

[0034] Next, the biopsy sampler operating parts of some embodiments of the present application are exemplarily described in combination with the above-mentioned figure marks.

[0035] (First embodiment)

[0036] like Figure 1 and Figure 2 As shown, a biopsy sampler operating part 100 with a limiting function is characterized in that it includes: a main body 4, which is generally columnar; a sliding part 2, which is a hollow cylindrical structure and surrounds the outer periphery of the main body, and can slide bidirectionally along the main body 4 relative to the outer periphery in a first direction and a second direction opposite to the first direction, a first fixing part 21 is provided at one end of the outer periphery of the sliding part 2, and a second fixing part 22 is provided at the other end of the outer periphery of the sliding part 2; a first limiting part, which is located at the first fixing part 21 of the outer periphery of the sliding part 2, and can limit the sliding part 2 from sliding along the main body 4 relative to the outer periphery of the main body 4 in one of the first direction and the second direction by contacting with the outer periphery of the main body 4; a second limiting part, which is located at the second fixing part 22 of the outer periphery of the sliding part 2, and can limit the sliding part 2 from sliding along the main body 4 relative to the outer periphery of the main body 4 in the other of the first direction and the second direction by contacting with the outer periphery of the main body 4.

[0037] like Figure 1 As shown, the main body 4 is generally columnar, or cylindrical. The main body 4 passes through the hollow structure formed in the center of the sliding part 2, so that the sliding part 2 can slide back and forth along the main body 4 in the left and right directions. A finger ring 1 is provided at one end of the main body 4 for the doctor's thumb to buckle in it. Figure 1 In the embodiment, the first direction is toward the left side and the second direction is toward the right side, but it is not limited thereto. The first direction may be toward the right side and the second direction may be toward the left side. Figure 1 As shown, the first limit portion is located at the left end of the sliding portion 2 to limit the sliding portion 2 from sliding to the left, and the second limit portion is located at the right end of the sliding portion 2 to limit the sliding portion 2 from sliding to the right. However, the opposite is also possible, for example, the first limit portion is located at the right end of the sliding portion 2 to limit the sliding portion 2 from sliding to the right, and the second limit portion is located at the left end of the sliding portion 2 to limit the sliding portion 2 from sliding to the left.

[0038] Figure 2 FIG. 1 is a schematic diagram of a first embodiment of the biopsy sampler operating unit according to the present invention. Figure 2As shown, the first limiting part includes: a first elastic member 3, which is installed in the first cylindrical part 11 in the first fixed part 21 of the sliding part 2 and can rotate relative to the first cylindrical part, one end of the first elastic member 3 is used as the first limiting end 12 and the other end is used as the first force end 10; a first force applying member, which is installed in the first fixed part 21 and can apply force to the first force end 10 of the first elastic member 3. The second limiting part includes: a second elastic member 3A, which is installed in the second cylindrical part 11A in the second fixed part 22 of the sliding part 2 and can rotate relative to the second cylindrical part, one end of the second elastic member 3A is used as the second limiting end 12A and the other end is used as the second force end 10A; a second force applying member, which is installed in the second fixed part 22 and can apply force to the second force end 10A of the second elastic member 3A.

[0039] The first elastic member 3 and the second elastic member 3A are elastic springs, and are made of materials such as stainless steel.

[0040] Here, the first urging member is the first spring 5 , and the second urging member is the second spring 5A.

[0041] When the first force-bearing end 10 is urged by the first spring 5 , the first limiting end 12 of the first elastic member 3 contacts the outer periphery of the main body 4 in an arc shape, thereby limiting the sliding part 2 from sliding along the main body 4 relative to the outer periphery in one of the first direction and the second direction.

[0042] Here, the first limiting end 12 is in line contact with the outer periphery of the main body 4 (refer to Figure 4 ).

[0043] When the second force-bearing end 10A is biased by the second spring 5A, the second limiting end 12A of the second elastic member 3A contacts the outer periphery of the main body 4 in an arc shape, thereby limiting the sliding part 2 from sliding along the main body 4 relative to the outer periphery of the main body 4 in the other of the first direction and the second direction.

[0044] Here, the second limiting end 12A is in line contact with the outer periphery of the main body 4 (refer to Figure 4 ).

[0045] When the sliding part 2 is restricted to slide along the main body 4 relative to the outer circumference of the main body 4 in one of the first direction and the second direction, the first force-bearing end 10 is subjected to the force from the finger, causing the first elastic member 3 to rotate on the first cylindrical part 11 in a manner to overcome the force of the first spring 5, so that the first limit end 12 leaves the outer circumference of the main body 4, thereby releasing the restriction on the sliding part 2 to slide along the main body 4 relative to the outer circumference of the main body 4 in one of the first direction and the second direction.

[0046] Similarly, when the sliding portion 2 is restricted from sliding along the main body 4 relative to the outer circumference of the main body 4 in the other of the first direction and the second direction, the second force-bearing end 10A receives force from the finger, causing the second elastic member 3A to rotate on the second cylindrical portion 11A in a manner that overcomes the force of the second spring 5A, thereby causing the second limit end 12A to leave the outer circumference of the main body 4, thereby releasing the restriction on the sliding portion 2 from sliding along the main body 4 relative to the outer circumference of the main body 4 in the other of the first direction and the second direction.

[0047] That is to say, without triggering the elastic member (such as the first elastic member 3), the position limiting is achieved by the angle formed by the elastic member and the outer peripheral surface of the core rod as the main body 4. The principle is that one end of the elastic member (such as the first position limiting end 12) forms an angle with the surface of the main body 4, and due to the angle, the sliding part 2 cannot move in the acute angle direction ( Figure 2 The sliding part 2 can move in the obtuse angle direction ( Figure 2 There are two elastic members (first elastic member 3, second elastic member 3A) at the front and rear of the sliding part 2, so that both unidirectional movements are restricted, thereby achieving that the left and right movements of the sliding part 2 on the main body 4 are restricted.

[0048] The specific operations of the biopsy sampler operation unit, the biopsy sampler equipped therewith, and the endoscope equipped with the biopsy sampler are as follows.

[0049] When the doctor needs to open the sampling part (clamp head) 6 of the biopsy sampler, the finger moves forward ( Figure 2 The finger triggers the first force-bearing end 10 of the first elastic member 3 at the front end of the sliding part 2, and overcomes the elastic force of the first spring 5 to rotate the first elastic member 3 on the first cylindrical part 11 of the sliding part 2, driving the first limiting end 12 to rotate, and the first limiting end 12 leaves the outer surface of the main body 4. At this time, the sliding part 2 can move to the front end ( Figure 2 The sampling portion 6 of the biopsy sampler is opened to the required opening angle, and the back of the finger leaves the first force-bearing end 10, the first spring 5 is reset, the first elastic member 3 is reset and contacts the main body 4, and the sliding portion 2 is maintained at the current position of the main body 4 and is limited.

[0050] When the doctor needs to use the sampling part 6 of the biopsy sampler to clamp tissue (i.e., close the sampling part), the finger pulls the sliding part 2 backward, and the finger triggers the second force-bearing end 10A of the second elastic member 3A at the rear end of the sliding part 2, and overcomes the elastic force of the second spring 5A to make the second elastic member 3A rotate on the second cylindrical part 11A of the sliding part 2, driving the second limiting end 12A to rotate, and the second limiting end 12A leaves the outer surface of the main body 4. At this time, the sliding part 2 can move to the rear end ( Figure 2 middle right) moves normally (e.g. Figure 5 After the sampling part 6 of the biopsy sampler is closed and the tissue is clamped, the finger leaves the second force-bearing end 10A, the second spring 5A is reset, the second elastic member 3A is reset and contacts the main body 4, and the sliding part 2 is kept at the current position of the main body 4 and is limited (as shown in FIG. Figure 6 The biopsy sampler is withdrawn from the endoscope and the sampled tissue (human tissue) is removed.

[0051] When the sampling portion 6 of the biopsy sampler passes through the endoscope, the sampling portion 6 is always kept closed due to the limiting structure of the operating portion of the biopsy sampler, so that the sampling portion 6 will not be opened by mistake.

[0052] When removing tissue, due to the limiting structure of the biopsy sampler operating part, the sampling part 6 will always keep clamping the tissue, and the doctor's fingers do not need to clamp the sliding part 2 of the biopsy sampler operating part to keep the sampling part 6 clamped.

[0053] In addition, if Figure 1 and Figure 2 As shown, the biopsy sampler operating part 100 may also include: a third limiting part, which is located at the third fixing part 23 of the outer periphery of the sliding part 2 and is located on the opposite side of the first limiting part across the main body 4, and can limit the sliding part 2 to slide in one of the first direction and the second direction along the main body 4 relative to the outer periphery of the main body 4 together with the first limiting part by contacting with the outer periphery of the main body 4; a fourth limiting part, which is located at the fourth fixing part 24 of the outer periphery of the sliding part 2 and is located on the opposite side of the second limiting part across the main body 4, and can limit the sliding part 2 to slide in the other of the first direction and the second direction along the main body 4 relative to the outer periphery of the main body 4 together with the second limiting part by contacting with the outer periphery of the main body 4.

[0054] That is, for example Figure 2 As shown, the sliding part 2 has a first limit part and a third limit part on the left side facing each other, and a second limit part and a fourth limit part on the right side facing each other. That is, the first limit part and the third limit part can be regarded as limit parts on the same side, and the second limit part and the fourth limit part can be regarded as limit parts on the same side. The third limit part and the fourth limit part can adopt the same structure as the first limit part and the second limit part.

[0055] It is worth noting that although Figure 2Four limiting parts are shown in the figure, but the present invention only needs one group of limiting parts (the first limiting part and the second limiting part) to realize the limiting function. The two groups of limiting parts in the figure (the first limiting part and the second limiting part are one group, and the third limiting part and the fourth limiting part are one group) can make the structure symmetrical and more stable. In addition, the biopsy sampler operating part 100 of the present invention can have three or more groups of limiting parts, and the limiting parts on the same side can be evenly arranged at equal intervals in the circumferential direction of the sliding part 2. For example, three groups of limiting parts are set, and the limiting parts on the same side are arranged at intervals of 60° in the circumferential direction of the sliding part 2. In addition, the force-bearing ends in the limiting parts on the same side can be formed as one body (for example, connected by a circular ring) so that the force of the hand acts evenly on each force-bearing end. All limiting parts can adopt the same structure or different structures.

[0056] In addition, when the sliding portion 2 has four stoppers, the index finger and the middle finger can be used to respectively operate the stoppers located above and below the sliding portion 2 ( Figure 2 ) is at the force-bearing end of the limiting part, and other operations are the same as the above-mentioned specific operations.

[0057] (Second embodiment)

[0058] The main difference between the biopsy sampler operating portion of the second embodiment of the present invention and the biopsy sampler operating portion of the first embodiment is that the first ejector pin 9 and the second ejector pin 9A are used to replace the first spring 5 and the second spring 5A as the first and second urging members, respectively.

[0059] like Figure 3 As shown, the first limiting portion includes: a first elastic member 8, which is installed on the first square axis portion 14 in the first fixed portion 21 of the sliding portion 2, one end of the first elastic member 8 serves as the first limiting end 15 and the other end serves as the first force-bearing end 13; a first force-applying member, which is installed on the first force-bearing end 13 and passes through the first square axis portion 14 and can apply force to the first limiting end 15 of the first elastic member 8.

[0060] like Figure 3 As shown, the second limiting portion includes: a second elastic member 8A, which is installed on the second square axis portion 14A in the second fixed portion 22 of the sliding portion 2, one end of the second elastic member 8A serves as the second limiting end 15A and the other end serves as the second force-bearing end 13A; a second force-applying member, which is installed on the second force-bearing end 13A and passes through the second square axis portion 14A and can apply force to the second limiting end 15A of the second elastic member 8A.

[0061] The first urging member is the first ejector pin 9, and the second urging member is the second ejector pin 9A.

[0062] like Figure 3As shown, when the first limiting end 15 is not subjected to force by the first ejector pin 9, the first limiting end 15 of the first elastic member 8 contacts the outer periphery of the main body 4 in an arc shape, thereby limiting the sliding part 2 from sliding along the main body 4 relative to the outer periphery of the main body 4 in one of the first direction and the second direction.

[0063] like Figure 3 As shown, when the second limiting end 15A is not applied with force by the second ejector pin 9A, the second limiting end 15A of the second elastic member 8A contacts the outer periphery of the main body 4 in an arc shape, thereby limiting the sliding part 2 from sliding along the main body 4 relative to the outer periphery of the main body 4 in one of the first direction and the second direction.

[0064] like Figure 3 As shown, in a state where the sliding portion 2 is restricted from sliding along the main body 4 relative to the outer circumference of the main body 4 in one of the first direction and the second direction, the first force-bearing end 13 is subjected to a force from a finger, so that the first force-bearing end 13 drives the first ejector pin 9 to move toward the first limit end 15, and the first ejector pin 9 pushes the first limit end 15 to make the first limit end 15 leave the outer circumference of the main body 4, thereby releasing the restriction on the sliding portion 2 from sliding along the main body 4 relative to the outer circumference of the main body 4 in one of the first direction and the second direction.

[0065] like Figure 3 As shown, in a state where the sliding portion 2 is restricted from sliding along the main body 4 relative to the outer circumference of the main body 4 in the other of the first direction and the second direction, the second force-bearing end 13A receives force from the finger, so that the second force-bearing end 13A drives the second ejector pin 9A to move toward the second limiting end 15A, and the second ejector pin 9A pushes the second limiting end 15A to make the second limiting end 15A leave the outer circumference of the main body 4, thereby releasing the restriction on the sliding portion 2 to slide along the main body 4 relative to the outer circumference of the main body 4 in the other of the first direction and the second direction.

[0066] The specific working steps of the biopsy sampler operating unit of the second embodiment are similar to the above-mentioned specific working steps of the biopsy sampler operating unit of the first embodiment.

[0067] For example, the first elastic member 8 is clamped on the first square shaft portion 14 of the sliding portion, and the first force-bearing end 13 of the first elastic member 8 is deformed by the force of the finger, driving the first ejector pin 9 to move toward Figure 3 The first push pin 9 pushes the first limit end 15 of the first elastic member 8 to deform, thereby realizing opening and closing. Resetting is achieved by the deformation of the first elastic member 8. The working mode of other elastic members is similar to that of the first elastic member.

[0068] like Figure 1As shown, the present invention further provides a biopsy sampler, which includes: a sampling part 6; a biopsy sampler operating part 100 as described in any one of the first embodiment and the second embodiment; and a connecting part 7, which connects the sampling part 6 and the biopsy sampler operating part 100.

[0069] like Figure 7 As shown, the present invention further provides an endoscope, which is equipped with the biopsy sampler described in any one of the first embodiment and the second embodiment.

[0070] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0071] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0072] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0073] For those skilled in the art, any modifications and changes made according to the above-mentioned embodiments of the present invention should be included in the protection scope of the present invention without departing from the spirit of the present invention.

Claims

1. A biopsy sampler operating part (100) with a limit position function, characterized in that: include: The main body (4) is generally columnar; A sliding portion (2) having a hollow cylindrical structure and surrounding the outer circumference of the main body portion, and capable of bidirectional sliding along the main body portion (4) relative to the outer circumference of the main body portion (4) in a first direction and in a second direction opposite to the first direction, wherein a first fixing portion (21) is provided at one end of the outer circumference of the sliding portion (2) and a second fixing portion (22) is provided at the other end of the outer circumference of the sliding portion (2); a first limiting portion, which is located at the first fixing portion (21) on the periphery of the sliding portion (2) and is capable of limiting the sliding portion (2) from sliding along the periphery of the main portion (4) relative to the periphery of the main portion (4) in one of the first direction and the second direction; a second limiting portion, which is located at the second fixing portion (22) on the outer periphery of the sliding portion (2) and is capable of limiting the sliding portion (2) from sliding along the outer periphery of the main portion (4) relative to the outer periphery of the main portion (4) in the other of the first direction and the second direction by contacting with the outer periphery of the main portion (4); The first limiting portion comprises: a first elastic member A (3), which is mounted on the first cylindrical portion (11) in the first fixed portion (21) of the sliding portion (2) and is rotatable relative to the first cylindrical portion, one end of the first elastic member A (3) serving as a first limiting end A (12) and the other end serving as a first force-bearing end A (10); a first force-applying member A, which is mounted on the first fixing portion (21) and is capable of applying force to the first force-bearing end A (10) of the first elastic member A (3); The second limiting portion includes: a second elastic member A (3A), which is mounted on the second cylindrical portion (11A) in the second fixed portion (22) of the sliding portion (2) and is rotatable relative to the second cylindrical portion, one end of the second elastic member A (3A) serving as a second limiting end (12A) and the other end serving as a second force-bearing end (10A); A second force-applying component A is mounted on the second fixing portion (22) and is capable of applying force to the second force-bearing end (10A) of the second elastic member A (3A).

2. The biopsy sampler operating part (100) according to claim 1, characterized in that: The first force applying component A is a first spring (5), and the second force applying component A is a second spring (5A); When the first force-bearing end A (10) is forced by the first spring (5), the first limiting end A (12) of the first elastic member A (3) contacts the outer periphery of the main body (4) in an arc shape, thereby limiting the sliding part (2) from sliding along the main body (4) relative to the outer periphery of the main body (4) in one of the first direction and the second direction; When the second force-bearing end (10A) is forced by the second spring (5A), the second limiting end (12A) of the second elastic member A (3A) contacts the outer periphery of the main body (4) in an arc shape, thereby limiting the sliding part (2) from sliding along the main body (4) relative to the outer periphery of the main body (4) in the other of the first direction and the second direction.

3. The biopsy sampler operating part (100) according to claim 2, characterized in that: When the sliding portion (2) is restricted from sliding along the main body (4) relative to the outer circumference of the main body (4) in one of the first direction and the second direction, the first force-bearing end A (10) receives force from a finger, causing the first elastic member A (3) to rotate on the first cylindrical portion (11) in a manner that overcomes the force applied by the first spring (5), thereby causing the first limiting end A (12) to leave the outer circumference of the main body (4), thereby releasing the restriction on the sliding portion (2) from sliding along the main body (4) relative to the outer circumference of the main body (4) in one of the first direction and the second direction; When the sliding portion (2) is restricted from sliding along the main body (4) relative to the outer circumference of the main body (4) in the other of the first direction and the second direction, the second force-bearing end (10A) receives force from a finger, causing the second elastic member A (3A) to rotate on the second cylindrical portion (11A) in a manner that overcomes the force applied by the second spring (5A), thereby causing the second limiting end (12A) to leave the outer circumference of the main body (4), thereby releasing the restriction on the sliding portion (2) from sliding along the main body (4) relative to the outer circumference of the main body (4) in the other of the first direction and the second direction.

4. The biopsy sampler operating part (100) according to claim 1, characterized in that: The biopsy sampler operating portion further comprises: a third limiting portion, which is located at a third fixing portion (23) on the outer periphery of the sliding portion (2) and is located on the opposite side of the first limiting portion across the main body (4), and is capable of limiting the sliding portion (2) from sliding along the main body (4) relative to the outer periphery of the main body (4) in one of the first direction and the second direction together with the first limiting portion by contacting the outer periphery of the main body (4); A fourth limiting portion, which is a fourth fixing portion (24) located on the outer periphery of the sliding portion (2) and is located on the opposite side of the second limiting portion across the main body (4), and is capable of limiting the sliding portion (2) from sliding along the main body (4) relative to the outer periphery of the main body (4) in conjunction with the second limiting portion by contacting the outer periphery of the main body (4) in order to move in the other of the first direction and the second direction.

5. A biopsy sampler operating part (100) with a limit function, characterized in that: include: The main body (4) is generally columnar; A sliding portion (2) having a hollow cylindrical structure and surrounding the outer circumference of the main body portion, and capable of bidirectional sliding along the main body portion (4) relative to the outer circumference of the main body portion (4) in a first direction and in a second direction opposite to the first direction, wherein a first fixing portion (21) is provided at one end of the outer circumference of the sliding portion (2) and a second fixing portion (22) is provided at the other end of the outer circumference of the sliding portion (2); a first limiting portion, which is located at the first fixing portion (21) on the periphery of the sliding portion (2) and is capable of limiting the sliding portion (2) from sliding along the periphery of the main portion (4) relative to the periphery of the main portion (4) in one of the first direction and the second direction; a second limiting portion, which is located at the second fixing portion (22) on the outer periphery of the sliding portion (2) and is capable of limiting the sliding portion (2) from sliding along the outer periphery of the main portion (4) relative to the outer periphery of the main portion (4) in the other of the first direction and the second direction by contacting with the outer periphery of the main portion (4); The first limiting portion comprises: a first elastic member B (8) mounted on the first square shaft portion (14) in the first fixing portion (21) of the sliding portion (2), one end of the first elastic member B (8) serving as a first limiting end B (15) and the other end serving as a first force-bearing end B (13); a first force-applying member B, which is mounted on the first force-bearing end B (13) and passes through the first square shaft portion (14) and is capable of applying force to the first limiting end B (15) of the first elastic member B (8); The second limiting portion includes: a second elastic member B (8A) mounted on the second square shaft portion (14A) in the second fixing portion (22) of the sliding portion (2), one end of the second elastic member B (8A) serving as a second limiting end (15A) and the other end serving as a second force-bearing end (13A); A second force-applying member B is mounted on the second force-bearing end (13A) and passes through the second square shaft portion (14A) and is capable of applying force to the second limiting end (15A) of the second elastic member B (8A).

6. The biopsy sampler operating part (100) according to claim 5, characterized in that: The first force-applying component B is a first ejector pin (9), and the second force-applying component B is a second ejector pin (9A); When the first limiting end B (15) is not subjected to force by the first ejector pin (9), the first limiting end B (15) of the first elastic member B (8) contacts the outer periphery of the main body (4) in an arc shape, thereby limiting the sliding part (2) from sliding along the main body (4) relative to the outer periphery of the main body (4) in one of the first direction and the second direction; When the second limiting end (15A) is not subjected to force by the second ejector pin (9A), the second limiting end (15A) of the second elastic member B (8A) contacts the outer periphery of the main body (4) in an arc shape, thereby limiting the sliding part (2) from sliding along the main body (4) relative to the outer periphery of the main body (4) in one of the first direction and the second direction.

7. The biopsy sampler operating part (100) according to claim 6, characterized in that: When the sliding portion (2) is restricted from sliding along the main body (4) relative to the outer circumference of the main body (4) in one of the first direction and the second direction, the first force-bearing end B (13) receives a force from a finger, so that the first force-bearing end B (13) drives the first ejector pin (9) to move toward the first limit end B (15), and the first ejector pin (9) pushes the first limit end B (15) so that the first limit end B (15) leaves the outer circumference of the main body (4), thereby releasing the restriction on the sliding portion (2) sliding along the main body (4) relative to the outer circumference of the main body (4) in one of the first direction and the second direction; When the sliding portion (2) is restricted from sliding along the main body (4) relative to the outer circumference of the main body (4) in the other of the first direction and the second direction, the second force-bearing end (13A) receives force from a finger, so that the second force-bearing end (13A) drives the second ejector pin (9A) to move toward the second limit end (15A), and the second ejector pin (9A) pushes the second limit end (15A) so that the second limit end (15A) leaves the outer circumference of the main body (4), thereby releasing the restriction on the sliding portion (2) from sliding along the main body (4) relative to the outer circumference of the main body (4) in the other of the first direction and the second direction.

8. The biopsy sampler operating part (100) according to claim 5, characterized in that: The biopsy sampler operating portion further comprises: a third limiting portion, which is located at a third fixing portion (23) on the outer periphery of the sliding portion (2) and is located on the opposite side of the first limiting portion across the main body (4), and is capable of limiting the sliding portion (2) from sliding along the main body (4) relative to the outer periphery of the main body (4) in one of the first direction and the second direction together with the first limiting portion by contacting the outer periphery of the main body (4); A fourth limiting portion, which is a fourth fixing portion (24) located on the outer periphery of the sliding portion (2) and is located on the opposite side of the second limiting portion across the main body (4), and is capable of limiting the sliding portion (2) from sliding along the main body (4) relative to the outer periphery of the main body (4) in conjunction with the second limiting portion by contacting the outer periphery of the main body (4) in order to move in the other of the first direction and the second direction.

9. A biopsy sampler, characterized in that: include: Sampling section (6); The biopsy sampler operating part (100) according to any one of claims 1 to 8; A connecting portion (7) connects the sampling portion and the biopsy sampler operating portion.

10. An endoscope, characterized in that: A biopsy sampler according to claim 9.

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