Hard toothed grasping forceps with bendable end parts

Abstract

The utility model discloses hard toothed grasping forceps with bendable ends. The grasping forceps comprise a first handle, a second handle, a catheter, a fixed forceps piece and a movable forceps piece. The second handle is pivoted with the first handle; the catheter comprises a hard section and a flexible section, and one end of the hard section is connected with the first handle; the fixed forceps piece comprises a first forceps seat and a first forceps head, the first forceps seat is connected with the flexible section, and the first forceps head is provided with a first tooth tip, a second tooth tip and a first groove; the movable clamp piece comprises a second clamp seat and a second clamp head, the second clamp seat is pivoted with the first clamp seat, and the second clamp head is provided with a third tooth tip, a second groove and a third groove; the second handle is connected with the second clamp seat through a first control line; and the outer wall of the first clamp seat is connected with a second control line. The device is simple in structure and convenient to operate, and the accuracy of surgical operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical insurance instruments, and particularly relates to a hard-toothed forceps with a bendable end. Background Art

[0002] Laparoscopic surgery is a newly developed minimally invasive method and an inevitable trend in the development of future surgical methods. Existing medical thoracoscope forceps include two types: rigid thoracoscopes and bendable thoracoscopes. Among them, the disadvantages of rigid medical thoracoscopes are that there are many openings, two holes need to be made in the abdominal wall and chest wall, which cause great harm to patients; moreover, the whole of the rigid medical thoracoscope is a rigid tubular structure. After it is inserted into the diseased position of the human body, the operation of adjusting the angle is complex, which brings inconvenience to the operator, and the angle adjustment range is limited. Sometimes, tissue specimens on the side walls of special positions such as the chest wall cannot be obtained, resulting in a low success rate of obtaining pleural tissue. Although there are some bendable forceps available for use at present, the structures of these bendable forceps are relatively complex, and they usually have the disadvantages of difficult processing, high manufacturing cost, and difficult operation, which also makes patients bear high treatment costs. In addition, the clamping effect of the existing bendable forceps is not very ideal, and there is still much room for improvement. Content of the Utility Model

[0003] The utility model provides a hard-toothed forceps with a bendable end to solve the deficiencies of the prior art.

[0004] To achieve the above object, the utility model provides the following technical solutions:

[0005] A hard-toothed forceps with a bendable end,[[]]

[0006] comprises a first handle, a second handle, a fixed forceps blade, a movable forceps blade and a catheter; the catheter comprises a rigid section and a flexible section, one end of the rigid section is connected to the first handle, and the other end is connected to the flexible section, and the flexible section can be bent and deformed; the fixed forceps blade comprises a first forceps seat and a first forceps head, the first forceps seat is connected to the flexible section, and a plurality of first tooth tips and second tooth tips are arranged on the first forceps head, the first tooth tips and the second tooth tips are both arranged linearly, and a first groove is arranged between the first tooth tips and the second tooth tips; the movable forceps blade comprises a second forceps seat and a second forceps head, the second forceps seat is pivotally connected to the first forceps seat, and a plurality of third tooth tips arranged linearly are arranged on the second forceps head, and a second groove and a third groove are respectively arranged on both sides of the third tooth tips; the second handle is connected to the second forceps seat through a first control wire; a second control wire is connected to the outer wall of the first forceps seat;

[0007] Wherein, the movable jaw has a closed position and an open position, and the second handle is used to control the movement of the movable jaw between the closed position and the open position; when the movable jaw is in the closed position, the first tooth tip, the second tooth tip, and the third tooth tip are respectively inserted into the second groove, the third groove, and the first groove; when the movable jaw is in the closed position, the second jaw head is separated from the first jaw head.

[0008] In some embodiments, the first tooth tips are arranged along the extending direction of the first jaw head, and the arrangement direction of the first tooth tips is parallel to the arrangement direction of the second tooth tips.

[0009] In some embodiments, the first tooth tip, the second tooth tip, and the third tooth tip are all in the shape of a quadrangular pyramid.

[0010] In some embodiments, the cross-sectional shapes of the first groove, the second groove, and the third groove are all V-shaped.

[0011] In some embodiments, a cutting groove and a first pin hole communicating with the cutting groove are provided on the first jaw seat, and a first pin shaft is provided in the first pin hole; the second jaw seat is located in the cutting groove, a second pin hole is provided on the second jaw seat, and one end of the first pin shaft is inserted into the second pin hole.

[0012] In some embodiments, first channels penetrating through both ends are provided inside both the rigid section and the flexible section, a second channel for communicating the first channel with the cutting groove is provided on the first jaw seat, and the first control wire is arranged in the first channel and the second channel.

[0013] In some embodiments, a first wire passing hole is provided on the second jaw seat, the first wire passing hole and the first jaw head are on the same side of the second jaw head, and one end of the first control wire is fixed in the first wire passing hole.

[0014] In some embodiments, the flexible section is a spiral spring tube formed by laser cutting.

[0015] In some embodiments, from the middle section to both ends of the flexible section, the pitch of the flexible section gradually becomes smaller.

[0016] In some embodiments, the first handle includes a mounting portion, a first extension rod, and a first finger ring connected in sequence, the rigid section is connected to the mounting portion and is substantially perpendicular to the first extension rod, and a mounting groove is provided on the mounting portion; the second handle includes a plugging portion, a second extension rod, and a second finger ring connected in sequence, the plugging 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 wire extends into the mounting groove and is connected to the plugging portion.

[0017] Compared with the prior art, the end-bendable rigid separation forceps provided by the present utility model improve the clamping effect by arranging tooth tips and grooves on the forceps head, have a simpler structure and lower manufacturing difficulty, thus being beneficial to reducing the medical expenses borne by patients. Moreover, the operation method of the end-bendable rigid separation forceps is very simple, which is beneficial to reducing the difficulty of the operation, shortening the operation time and improving the accuracy of the operation. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 is a perspective view of an embodiment of the present utility model.

[0020] Figure 2 is an internal structure diagram of an embodiment of the present utility model.

[0021] Figure 3 is Figure 2 a partial enlarged view of the left end of the shown embodiment.

[0022] Figure 4 is a structure diagram of the fixed forceps blade of an embodiment of the present utility model.

[0023] Figure 5 is a structure diagram of the movable forceps blade of an embodiment of the present utility model.

[0024] Figure 6 is a structure diagram of the first handle of an embodiment of the present utility model.

[0025] Figure 7 is a structure diagram of the second handle in an embodiment of the present utility model.

[0026] The description of the reference numerals is as follows:

[0027] In the figure: 1. First handle; 101. Mounting part; 1011. Mounting groove; 1012. First extension rod; 103. First finger ring; 104. Curved arm; 2. Second handle; 201. Insertion part; 2011. Second wire threading hole; 202. Second extension rod; 203. Second finger ring; 3. Catheter; 301. Rigid section; 302. Flexible section; 303. First channel; 4. Fixed clamp piece; 401. First clamp base; 4011. Cutting groove; 4012. First pin hole; 4013. Second channel; 402. First clamp head; 4021. First tooth tip; 4022. Second tooth tip; 4023. First groove; 5. Movable clamp piece; 501. Second clamp base; 5011. Second pin hole; 5012. First wire threading hole; 502. Second clamp head; 5021. Third tooth tip; 5022. Second groove; 5023. Third groove; 6. First control wire; 7. Second control wire; 8. First pin shaft; 9. Second pin shaft. Detailed implementation manners

[0028] The following further describes in detail the implementation manners of the present application in conjunction with the drawings and embodiments. The detailed descriptions and drawings of the following embodiments are used to exemplarily illustrate the principle 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, not limited to the specific embodiments disclosed in the text, but including all technical solutions falling within the scope of the claims.

[0029] These embodiments are provided by the present application 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 arrangements of components and steps, the components of materials, numerical expressions and values described in these embodiments should be interpreted as merely exemplary, rather than as limitations.

[0030] It should be noted that in the description of the present application, unless otherwise specified, the meaning of "a plurality" is greater than or equal to two; the orientation or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing the present application 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 of the present application. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0031] In addition, the "first", "second" and similar terms used in this application do not denote any order, quantity or importance, but are merely used to distinguish different parts. "Vertical" does not mean strictly vertical, but within the allowable error range. "Parallel" does not mean strictly parallel, but within the allowable error range. Terms such as "including" or "comprising" mean that the elements before this term cover the elements listed after this term, and do not exclude the possibility of also covering other elements.

[0032] It should also be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected" and "joined" 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 those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, an intermediate device may or may not exist between the specific device and the first device or the second device.

[0033] All terms used in this application have the same meanings as 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 a general dictionary, such as those, should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.

[0034] Technologies, methods and devices known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods and devices should be regarded as part of the specification.

[0035] See Figures 1-7 As shown, the present utility model provides an end-bendable rigid toothed grasping forceps, which includes a first handle 1, a second handle 2, a catheter 3, a fixed jaw 4, a movable jaw 5, a first control wire 6 and a second control wire 7.

[0036] The second handle 2 is pivotally connected to the first handle 1. One hand can hold the first handle 1 and the second handle 2 simultaneously, and the second handle 2 can be manually driven to rotate relative to the first handle 1.

[0037] The catheter 3 includes a rigid section 301 and a flexible section 302 that are connected to each other. The rigid section 301 can be made of a biocompatible metal material (such as titanium alloy). The rigid section 301 cannot be bent and deformed. One end of the rigid section 301 away from the flexible section 302 is connected to the first handle 1. The flexible section 302 is made of a deformable material or has a structure that is easily deformable, so that the flexible section 302 can be bent and deformed.

[0038] As shown Figure 4 in FIG. 1, the fixed jaw piece 4 includes a first jaw base 401 and a first jaw head 402 which are integrally formed. The first jaw base 401 is fixedly connected to the flexible section 302. A plurality of first tooth tips 4021 and second tooth tips 4022 are provided on the first jaw head 402. The first tooth tips 4021 and the second tooth tips 4022 are linearly arranged at equal intervals. A first groove 4023 is provided between the first tooth tips 4021 and the second tooth tips 4022. The deepest part of the first groove 4023 is lower than the bottom of the first tooth tips 4021.

[0039] As shown Figure 5 in FIG. 2, the movable jaw piece 5 includes a second jaw base 501 and a second jaw head 502 which are integrally formed. The second jaw base 501 is pivotally connected to the first jaw base 401. The second jaw head 502 extends in a direction away from the flexible section 302. A plurality of third tooth tips 5021 which are linearly arranged at equal intervals are provided on the second jaw head 502. A second groove 5022 and a third groove 5023 are respectively provided on both sides of the third tooth tips 5021.

[0040] One end of the first control wire 6 is connected to the second handle 2, and the other end of the first control wire 6 is connected to the second jaw base 501; one end of the second control wire 7 is connected to the outer wall of the first jaw base 401, and the other end of the second control wire 7 extends towards the second handle 2. Before use, the flexible section 302 on the end-bending hard separation pliers is in a straight state; during use, by pulling the second control wire 7, the flexible section 302 can be driven to bend and deform, so the operation is very simple.

[0041] The movable jaw piece 5 has a closed position and an open position. The second handle 2 is used to control the movement of the movable jaw piece 5 between the closed position and the open position. When the movable jaw piece 5 is in the closed position, the first tooth tips 4021, the second tooth tips 4022, and the third tooth tips 5021 are respectively inserted into the second groove 5022, the third groove 5023, and the first groove 4023; as shown Figure 1 in FIG. 3, when the movable jaw piece 5 is in the open position, the second jaw head 502 is separated from the first jaw head 402.

[0042] As shown Figure 2As 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 jaws 5 are 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 jaws 5 are 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.

[0043] See also Figure 4 As shown, the first tooth tips 4021 are arranged along the extension direction of the first pliers head 402, and the arrangement direction of the first tooth tips 4021 is parallel to the arrangement direction of the second tooth tips 4022. The first tooth tips 4021, the second tooth tips 4022, and the third tooth tips 5021 are all in the shape of quadrangular pyramids, and the cross-sectional shapes of the first grooves 4023, the second grooves 5022, and the third grooves 5023 are all in V-shape.

[0044] 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.

[0045] 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 blade 5 to open.

[0046] In order to facilitate the connection between the first control line 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 clamp head 502. One end of the first control line 6 is fixed in the first threading hole 5012.Figure 3 As shown, the first wire threading hole 5012 and the first clamping head 402 are both located below the second clamping head 502, thereby ensuring that when the first control wire 6 is pulled, the second clamping head 502 moves towards the closed position, and when the first control wire 6 is pushed, the second clamping head 502 moves towards the open position.

[0047] The flexible section 302 can be made of the same material as the rigid section 301. At this time, the flexible section 302 and the rigid section 301 are processed from a single pipe. In this case, the flexible section 302 needs to have a structure that is easy to deform. In specific implementation, a part of the aforementioned pipe can be cut into a helical spring tube by laser cutting, and this helical spring tube can be used as the flexible section 302.

[0048] In a preferred embodiment, from the middle section to both ends of the flexible section 302, the pitch of the flexible section 302 gradually decreases. Making the middle section of the flexible section 302 have a larger pitch and the two ends of the flexible section 302 have a smaller pitch can ensure that the flexible section 302 is more likely to deform, so as to be able to adjust the position of the separating forceps in the body more flexibly, reduce the difficulty of the operation, and improve the accuracy of the operation at the same time.

[0049] As Figure 6 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 rigid section 301 is connected to the mounting portion 101 and is substantially perpendicular to the first extension rod 102. An installation groove 1011 is provided on the mounting portion 101. The first finger ring 103 is in the shape of a ring, and the middle part of the first finger ring 103 has a hole suitable for a finger to extend into. In some preferred embodiments, an arc-shaped curved arm 104 is further provided at the lower end of the first finger ring 103 for a finger to lean on, thereby improving the stability of holding. 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 installation groove 1011 and is pivotally connected to the mounting portion 101 through a second pin shaft 9. One end of the first control wire 6 extends into the installation groove 1011 and is connected to the plug-in portion 201. The shape of the second finger ring 203 is basically the same as that of the first finger ring 103, and the middle part of the second finger ring 203 also has a hole for a finger to extend into. During production and processing, the edges of the first handle 1 and the second handle 2 can be rounded to avoid scratching during use. As Figure 7 shown, a second wire threading hole 2011 is provided at the upper end of the plug-in portion 201, and one end of the first control wire 6 is fixed in the second wire threading hole 2011.

[0050] Compared with the prior art, the end-bendable rigid separation forceps provided by the present utility model improve the clamping effect by arranging tooth tips and grooves on the forceps head, have a simpler structure and lower manufacturing difficulty, which is beneficial to reducing the medical expenses borne by patients. Moreover, the operation method of the end-bendable rigid separation forceps is very simple, which is beneficial to reducing the difficulty of the operation, shortening the operation time and improving the accuracy of the operation.

[0051] So far, the embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0052] Although some specific embodiments of the present application have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for the purpose of illustration and not for the purpose of limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be equivalently replaced without departing from the scope and spirit of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way.

Claims

1. A hard toothed grasping forceps with bendable ends, characterized in that: The invention comprises a first handle, a second handle, a fixed pliers blade, a movable pliers blade and a catheter; the catheter comprises a hard section and a flexible section, one end of the hard section is connected to the first handle, and the other end is connected to the flexible section, and the flexible section can be bent and deformed; the fixed pliers blade comprises a first pliers seat and a first pliers head, the first pliers seat is connected to the flexible section, a plurality of first tooth tips and a second tooth tip are arranged linearly on the first pliers head, the first tooth tips and the second tooth tips are arranged linearly, and a first groove is arranged between the first tooth tip and the second tooth tip; the movable pliers blade comprises a second pliers seat and a second pliers head, the second pliers seat is pivotally connected to the first pliers seat, a plurality of third tooth tips arranged linearly are arranged on the second pliers head, and a second groove and a third groove are respectively arranged on both sides of the third tooth tip; the second handle is connected to the second pliers seat through a first control line; the outer wall of the first pliers seat is connected to a second control line; 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 first tooth tip, the second tooth tip, and the third tooth tip are respectively inserted into the second groove, the third groove, and the first groove; when the movable pliers is in the closed position, the second pliers head is separated from the first pliers head.

2. The hard toothed grasping forceps with bendable ends according to claim 1, characterized in that: The first tooth tips are arranged along an extension direction of the first pliers head, and the arrangement direction of the first tooth tips is parallel to the arrangement direction of the second tooth tips.

3. The hard toothed grasping forceps with bendable ends according to claim 1, characterized in that: The first tooth tip, the second tooth tip, and the third tooth tip are all in the shape of a quadrangular pyramid.

4. The hard toothed grasping forceps with bendable ends according to claim 3, characterized in that: The cross-sectional shapes of the first groove, the second groove and the third groove are all V-shaped.

5. The hard toothed grasping forceps 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.

6. The hard toothed grasping forceps with bendable ends according to claim 5, characterized in that: The hard section and the flexible section are each provided with a first cavity penetrating 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.

7. The hard toothed grasping forceps with bendable ends according to claim 1, 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 clamp head, and one end of the first control line is fixed in the first threading hole.

8. The hard toothed grasping forceps with bendable ends according to claim 1, characterized in that: The flexible section is a spiral spring tube cut by laser.

9. The hard toothed grasping forceps with bendable ends according to claim 8, characterized in that: The pitch of the flexible section gradually decreases from the middle section to the two ends of the flexible section.

10. The hard toothed grasping forceps with bendable ends according to claim 9, 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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