Hard separating forceps with bendable end parts

Abstract

The utility model discloses a pair of hard separating forceps with bendable end parts. The pair of hard separating forceps comprises a first handle, a second handle, a catheter, a fixed forceps, a movable forceps, a first control line and a second control line, the second handle is pivoted with the first handle; the catheter comprises a hard section and a flexible section. The end, away from the flexible section, of the hard section is connected with the first handle. The fixing clamp comprises a first clamp seat and a first clamp head, and the first clamp seat is connected with the flexible section; the movable clamp comprises a second clamp seat and a second clamp head, and the second clamp seat is pivoted with the first clamp seat; one end of the first control line is connected with the second handle, and the other end of the first control line is connected with the second clamp seat; one end of the second control line is connected with the outer wall of the first clamp seat; the movable clamp has a closed position and an open position, and the second handle is used for controlling the movable clamp to move between the closed position and the open position. The utility model has the advantages of simpler structure and lower manufacturing difficulty, thereby being favorable for reducing the medical cost undertaken by a patient.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a pair of hard separation forceps with bendable ends. Background Art

[0002] Laparoscopic surgery is a newly developed minimally invasive method and an inevitable trend in the development of surgical methods in the future. Medical thoracoscopic separation forceps are an instrument used in laparoscopic surgery, usually used to clamp tissue or separate adhesions in the pelvic cavity. Existing medical thoracoscopic separation forceps include two types: rigid thoracoscopic and flexible thoracoscopic. Among them, the disadvantage of rigid medical thoracoscopic is that there are many openings, and two holes need to be made on the abdominal wall and chest wall, which causes great harm to the patient; moreover, the rigid medical thoracoscopic is a rigid tubular structure as a whole. After being inserted into the lesion position of the human body, the operation of adjusting the angle is complicated, which brings inconvenience to the operator, and the angle adjustment range is limited. Sometimes it is impossible to obtain tissue block samples of the side wall of special positions such as the chest wall, resulting in a low success rate of obtaining pleural tissue. Although there are some flexible separation forceps available for use, the structure of these flexible separation forceps is relatively complex, and they usually have the disadvantages of high processing difficulty, high manufacturing cost, and difficulty in operation, which also requires patients to bear high treatment costs. Utility Model Content

[0003] The utility model provides a hard separation pliers with bendable ends in order to solve the deficiencies of the prior art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A hard separation pliers with bendable ends, comprising a first handle and a second handle pivotally connected to the first handle, and also comprising a catheter, a fixed pliers, a movable pliers, a first control line and a second control line. The catheter comprises a hard section and a flexible section connected to each other, one end of the hard section away from the flexible section is connected to the first handle, and the flexible section can be bent and deformed; the fixed pliers comprises a first pliers seat and a first pliers head connected to each other, the first pliers seat is connected to the flexible section, and the first pliers head is provided with an arc-shaped first tooth surface; the movable pliers comprises a second pliers seat and a second pliers head connected to each other, the second pliers seat is pivotally connected to the first pliers seat, the second pliers head is provided with a second tooth surface, and a plurality of teeth are provided on the first tooth surface and the second tooth surface; one end of the first control line is connected to the second handle, and the other end of the first control line is connected to the second pliers seat; one end of the second control line is connected to the outer wall of the first pliers seat; the movable pliers has a closed position and an open position, and the second handle is used to control the movable pliers to move between the closed position and the open position; when the movable pliers is in the closed position, the teeth on the first tooth surface and the teeth on the second tooth surface are engaged with each other; when the movable pliers is in the closed position, the second tooth surface is separated from the first tooth surface.

[0006] In some embodiments, the first clamp seat is provided with a groove and a first pin hole connected to the groove, and a first pin shaft is provided in the first pin hole; the second clamp seat is located in the groove, and a second pin hole is provided on the second clamp seat, and one end of the first pin shaft is inserted into the second pin hole.

[0007] In some embodiments, the hard segment and the flexible segment are each provided with a first cavity running through both ends thereof, the first clamp seat is provided with a second cavity connecting the first cavity with the cutting groove, and the first control line is passed through the first cavity and the second cavity.

[0008] In some embodiments, a first threading hole is provided on the second clamp seat, the first threading hole and the first clamp head are located on the same side of the second tooth surface, and one end of the first control line is fixed in the first threading hole.

[0009] In some embodiments, the extending direction of each tooth is parallel to the first pin axis.

[0010] In some embodiments, a middle section of the first tooth surface protrudes toward the second clamp head.

[0011] In some embodiments, the flexible segment is a helical spring tube cut by laser.

[0012] In some embodiments, the pitch of the flexible segment gradually decreases from the middle segment to both ends of the flexible segment.

[0013] In some embodiments, the first handle includes a mounting portion, a first extension rod and a first finger ring connected in sequence, the hard section is connected to the mounting portion and is roughly perpendicular to the first extension rod, and a mounting groove is provided on the mounting portion; the second handle includes a plug-in portion, a second extension rod and a second finger ring connected in sequence, the plug-in portion is located in the mounting groove and is pivotally connected to the mounting portion through a second pin shaft, and one end of the first control line extends into the mounting groove and is connected to the plug-in portion.

[0014] Compared with the prior art, the end-bendable rigid separation forceps provided by the utility model have a simpler structure and are less difficult to manufacture, thereby helping to reduce the medical expenses borne by patients. Moreover, the operation of the end-bendable rigid separation forceps is very simple, which helps to reduce the difficulty of surgery, shorten the time of surgery, and improve the accuracy of surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1It is a stereogram of an embodiment of the utility model.

[0017] Figure 2 It is an internal structure diagram of an embodiment of the utility model.

[0018] Figure 3 yes Figure 2 A partial enlargement of the left end.

[0019] Figure 4 It is a structural diagram of a fixed clamp in an embodiment of the utility model.

[0020] Figure 5 It is a structural diagram of the movable pliers in the embodiment of the utility model.

[0021] Figure 6 It is a structural diagram of the first handle in the embodiment of the utility model.

[0022] Figure 7 It is a structural diagram of the second handle in the embodiment of the utility model.

[0023] The following are the descriptions of the reference numerals:

[0024] In the figure: 1, first handle; 101, mounting portion; 1011, mounting groove; 102, first extension rod; 103, first finger ring; 104, curved arm; 2, second handle; 201, plug-in portion; 2011, second threading hole; 202, second extension rod; 203, second finger ring; 3, catheter; 301, hard section; 302, flexible section; 303, first cavity; 4, fixed clamp; 401, first clamp seat; 40 11. cutting groove; 4012. first pin hole; 4013. second cavity; 402. first clamp head; 4021. first tooth surface; 4022. teeth; 5. movable clamp; 501. second clamp seat; 5011. second pin hole; 5012. first threading hole; 502. second clamp head; 5021. second tooth surface; 5022. teeth; 6. first control line; 7. second control line; 8. first pin shaft; 9. second pin shaft. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the implementation methods of the present application in conjunction with the accompanying drawings and examples. The detailed descriptions of the following examples and the accompanying drawings are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application. The present application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0026] The present application provides these embodiments to make the present application thorough and complete, and to fully express the scope of the present application to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0027] It should be noted that, in the description of this application, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply 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 this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0028] In addition, the words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0029] It should also be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0030] All terms used in this application have the same meaning as those understood by those of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0031] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0032] See also Figure 1-Figure 7 As shown, the utility model provides a hard separation forceps with bendable ends, comprising a first handle 1, a second handle 2, a catheter 3, a fixed forceps 4, a movable forceps 5, a first control line 6 and a second control line 7. The second handle 2 is pivotally connected to the first handle 1, and the first handle 1 and the second handle 2 can be held by one hand at the same time, and the second handle 2 can be manually driven to rotate relative to the first handle 1.

[0033] The catheter 3 includes a hard section 301 and a flexible section 302 connected to each other. The hard section 301 can be made of a biocompatible metal material (such as titanium alloy), and the hard section 301 cannot be bent or deformed. One end of the hard section 301 away from the flexible section 302 is connected to the first handle 1. The flexible section 302 is made of an easily deformable material or has an easily deformable structure, so that the flexible section 302 can be bent and deformed.

[0034] like Figure 4 As shown, the fixed clamp 4 includes an integrally formed first clamp seat 401 and a first clamp head 402 . The first clamp seat 401 is used to be fixedly connected to the flexible section 302 . The first clamp head 402 extends in a direction away from the flexible section 302 . The upper surface of the first clamp head 402 is an arc-shaped first tooth surface 4021 .

[0035] like Figure 5 As shown, the movable pliers 5 include an integrally formed second pliers seat 501 and a second pliers head 502. The second pliers seat 501 is pivotally connected to the first pliers seat 401. The second pliers head 502 extends in a direction away from the flexible section 302. The lower surface of the second pliers head 502 is a second tooth surface 5021 adapted to the first tooth surface 4021. A plurality of teeth 4022 are provided on the first tooth surface 4021, and a plurality of teeth 5022 are provided on the second tooth surface 5021.

[0036] One end of the first control line 6 is connected to the second handle 2, and the other end of the first control line 6 is connected to the second clamp seat 501. One end of the second control line 7 is connected to the outer wall of the first clamp seat 401, and the other end of the second control line 7 extends toward the second handle 2. Before use, the flexible section 302 on the hard separation pliers that can be bent at the end is in a straight shape; during use, the flexible section 302 can be driven to bend and deform by pulling the second control line 7, so the operation is very simple.

[0037] The movable pliers 5 has a closed position and an open position, and the second handle 2 is used to control the movable pliers 5 to move between the closed position and the open position; when the movable pliers 5 is in the closed position, the teeth 4022 on the first tooth surface 4021 and the teeth 5022 on the second tooth surface 5021 are engaged with each other; see Figure 1 As shown, when the movable pliers 5 is in the open position, the second tooth surface 5021 is separated from the first tooth surface 4021 .

[0038] like Figure 2 As shown, when the second handle 2 is driven to rotate clockwise around its pivot, the upper end of the second handle 2 pulls the first control line 6 to the right, and then the first control line 6 drives the second clamp head 502 to swing counterclockwise around its pivot until the second clamp head 502 and the first clamp head 402 are engaged with each other (i.e., the movable clamp 5 is in the closed position); when the second handle 2 is driven to rotate counterclockwise around its pivot, the upper end of the second handle 2 pushes the first control line 6 to the left, and then the first control line 6 drives the second clamp head 502 to swing clockwise around its pivot until the second clamp head 502 and the first clamp head 402 are separated from each other (i.e., the movable clamp 5 is in the open position). It is worth noting that the first control line 6 needs to have a certain hardness so that the first control line 6 can transmit the thrust applied by the second handle 2 to the second clamp seat 501.

[0039] In order to realize the pivot connection between the second clamp seat 501 and the first clamp seat 401, a slot 4011 and a first pin hole 4012 communicating with the slot 4011 are provided on the first clamp seat 401, and a first pin shaft 8 is provided in the first pin hole 4012; the second clamp seat 501 is located in the slot 4011, and a second pin hole 5011 is provided on the second clamp seat 501, and one end of the first pin shaft 8 is inserted into the second pin hole 5011. The second pin hole 5011 is clearance-matched with the first pin shaft 8, so that there is less resistance between the second clamp seat 501 and the first pin shaft 8.

[0040] like Figure 2 As shown, the interior of the hard section 301 and the flexible section 302 are both provided with a first cavity 303 penetrating both ends thereof, the first clamp seat 401 is provided with a second cavity 4013 which communicates the first cavity 303 with the groove 4011, and the first control wire 6 is passed through the first cavity 303 and the second cavity 4013. By passing the first control wire 6 through the first cavity 303 and the second cavity 4013, the radial dimension of the part inserted into the human body can be reduced, and the first cavity 303 and the second cavity 4013 can also provide a guiding effect for the first control wire 6, so as to facilitate driving the movable clamp 5 to open.

[0041] In order to facilitate the connection between the first control wire 6 and the second clamp seat 501, the second clamp seat 501 is provided with a first threading hole 5012. The first threading hole 5012 and the first clamp head 402 are located on the same side of the second tooth surface 5021. One end of the first control wire 6 is fixed in the first threading hole 5012. Figure 3 As shown, the first threading hole 5012 and the first clamp head 402 are both located below the second tooth surface 5021, thereby ensuring that the second clamp head 502 moves toward the closed position when the first control line 6 is pulled, and moves toward the open position when the first control line 6 is pushed.

[0042] See also Figure 4 and 5As shown, the extension direction of each tooth is parallel to the first pin 8, and both ends of each tooth extend to the edge of the corresponding tooth surface. The middle section of the first tooth surface 4021 protrudes toward the second clamp head 502, thereby improving the clamping effect between the first clamp head 402 and the second clamp head 502.

[0043] The flexible section 302 can be made of the same material as the hard section 301. In this case, the flexible section 302 and the hard section 301 are made of a pipe. In this case, the flexible section 302 needs to have a structure that is easily deformed. In a specific implementation, a portion of the aforementioned pipe can be cut into a spiral spring tube by laser cutting, and the spiral spring tube can be used as the flexible section 302. In a preferred embodiment, the pitch of the flexible section 302 gradually decreases from the middle section of the flexible section 302 to the two ends of the flexible section 302. The middle section of the flexible section 302 has a larger pitch, and the two ends of the flexible section 302 have a smaller pitch, which can ensure that the flexible section 302 is easier to deform, so that the position of the separation forceps in the body can be more flexibly adjusted, reducing the difficulty of the operation and improving the accuracy of the operation.

[0044] like Figure 6 As shown, the first handle 1 includes a mounting portion 101, a first extension rod 102 and a first finger ring 103 connected in sequence, the hard section 301 is connected to the mounting portion 101 and is substantially perpendicular to the first extension rod 102, the mounting portion 101 is provided with a mounting groove 1011, the first finger ring 103 is in the shape of a circular ring, and the middle part of the first finger ring 103 has a hole suitable for a finger to be inserted. In some preferred embodiments, the lower end of the first finger ring 103 is also provided with an arc-shaped curved arm 104, and the curved arm 104 is for the finger to lean on, thereby improving the stability of the grip. The second handle 2 includes a plug-in portion 201, a second extension rod 202 and a second finger ring 203 connected in sequence, the plug-in portion 201 is located in the mounting groove 1011 and is pivotally connected to the mounting portion 101 through the second pin 9, and one end of the first control line 6 extends into the mounting groove 1011 and is connected to the plug-in portion 201. The shape of the second finger ring 203 is substantially the same as that of the first finger ring 103, and the middle of the second finger ring 203 also has a hole for inserting a finger. During production and processing, the edges of the first handle 1 and the second handle 2 can be rounded to avoid scratches during use. Figure 7 As shown, a second threading hole 2011 is provided at the upper end of the plug-in portion 201 , and one end of the first control line 6 is fixed in the second threading hole 2011 .

[0045] Compared with the prior art, the end-bendable rigid separation forceps provided by the utility model have a simpler structure and are less difficult to manufacture, thereby helping to reduce the medical expenses borne by patients. Moreover, the operation of the end-bendable rigid separation forceps is very simple, which helps to reduce the difficulty of surgery, shorten the time of surgery, and improve the accuracy of surgery.

[0046] So far, various embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed herein.

[0047] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A hard separation pliers with bendable ends, comprising a first handle and a second handle pivotally connected to the first handle, characterized in that: Also includes: A catheter, the catheter comprising a hard segment and a flexible segment connected to each other, one end of the hard segment away from the flexible segment is connected to the first handle, and the flexible segment is bendable and deformable; A fixed pliers, the fixed pliers comprising a first pliers seat and a first pliers head connected to each other, the first pliers seat is connected to the flexible section, and the first pliers head is provided with an arc-shaped first tooth surface; The movable pliers include a second pliers seat and a second pliers head connected to each other, the second pliers seat is pivotally connected to the first pliers seat, the second pliers head is provided with a second tooth surface, and the first tooth surface and the second tooth surface are both provided with a plurality of teeth; A first control line, one end of which is connected to the second handle, and the other end of which is connected to the second clamp seat; A second control line, one end of which is connected to the outer wall of the first clamp seat; Wherein, the movable pliers has a closed position and an open position, and the second handle is used to control the movable pliers to move between the closed position and the open position; when the movable pliers is in the closed position, the teeth on the first tooth surface and the teeth on the second tooth surface engage with each other; when the movable pliers is in the closed position, the second tooth surface is separated from the first tooth surface.

2. The hard separation pliers with bendable ends according to claim 1, characterized in that: The first clamp seat is provided with a groove and a first pin hole connected to the groove, and a first pin shaft is provided in the first pin hole; the second clamp seat is located in the groove, and a second pin hole is provided on the second clamp seat, and one end of the first pin shaft is inserted into the second pin hole.

3. The hard separation pliers with bendable ends according to claim 2, characterized in that: The hard section and the flexible section are each provided with a first cavity penetrating both ends thereof, the first clamp seat is provided with a second cavity connecting the first cavity with the cutting groove, and the first control line is passed through the first cavity and the second cavity.

4. The hard separation pliers with bendable ends according to claim 2, characterized in that: The second clamp seat is provided with a first threading hole, the first threading hole and the first clamp head are located on the same side of the second tooth surface, and one end of the first control line is fixed in the first threading hole.

5. The hard separation pliers with bendable ends according to claim 2, characterized in that: An extending direction of each tooth is parallel to the first pin axis.

6. The hard separation pliers with bendable ends according to claim 1, characterized in that: A middle section of the first tooth surface protrudes toward the second pliers head.

7. The hard separation pliers with bendable ends according to claim 1, characterized in that: The flexible section is a spiral spring tube cut by laser.

8. The hard separation pliers with bendable ends according to claim 7, characterized in that: The pitch of the flexible section gradually decreases from the middle section to the two ends of the flexible section.

9. The hard separation pliers with bendable ends according to claim 1, characterized in that: The first handle includes a mounting portion, a first extension rod and a first finger ring connected in sequence, the hard section is connected to the mounting portion and is approximately perpendicular to the first extension rod, and a mounting groove is provided on the mounting portion; the second handle includes a plug-in portion, a second extension rod and a second finger ring connected in sequence, the plug-in portion is located in the mounting groove and is pivotally connected to the mounting portion through a second pin shaft, and one end of the first control line extends into the mounting groove and is connected to the plug-in portion.

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