Puncture equipment and surgical instrument

Abstract

The utility model discloses puncture equipment and a surgical instrument, and belongs to the technical field of medical instruments.The puncture equipment comprises a connecting assembly, a puncture assembly, a rotating part and a retainer, and the connecting assembly is provided with a containing cavity; a part of the puncture assembly penetrates through the accommodating cavity, and the puncture assembly is connected to the connecting assembly; at least part of the rotating part is arranged in the containing cavity, the puncture assembly is sleeved with the rotating part, and the rotating part is configured to rotate along with the puncture assembly; the retainer is arranged in the containing cavity, connected to the connecting assembly and used for being connected with the rotating piece so as to prevent the rotating piece from rotating relative to the connecting assembly in the first rotating direction. By arranging the rotating part capable of rotating along with the puncture assembly, the rotating part can be prevented from rotating, and the puncture assembly can be reset after rotating.

Description

Technical Field

[0001] This application belongs to the field of medical device technology, specifically to puncture equipment and surgical instruments. Background Art

[0002] When performing EUS-BD (endoscopic ultrasound-guided biliary drainage), superselection is required to ensure that the guidewire reaches the correct position.

[0003] However, with current technology, the direction of the guide wire after it extends out of the needle tip can only be adjusted by the doctor's manual manipulation. However, after the needle tip is rotated to the desired position, the needle tip will tend to reset. The doctor needs to free up at least one hand to fix the rotation angle of the needle tip to avoid needle tip reset, making subsequent operations inconvenient for the doctor. Utility Model Content

[0004] Purpose of the utility model: The present application provides a puncture device for solving the technical problem that the needle tip will be reset after rotation; another purpose of the present application is to provide a surgical instrument.

[0005] Technical solution: This application provides a puncture device, including:

[0006] A connecting assembly having a receiving cavity;

[0007] a puncture assembly, a portion of which is disposed in the accommodating cavity and is connected to the connecting assembly;

[0008] a rotating member, at least a portion of which is disposed in the accommodating cavity, the rotating member being connected to the puncture assembly, and configured to rotate along with the puncture assembly;

[0009] A stopper is provided in the accommodating cavity, the stopper is connected to the connecting assembly, and the stopper is used to connect with the rotating member to prevent the rotating member from rotating along a first rotation direction relative to the connecting assembly.

[0010] In some embodiments, the stopper includes a first surface and a second surface, the first surface and the second surface being connected;

[0011] The rotating member includes a plurality of protrusions surrounding the puncture assembly, and the protrusions have a stop surface and a driving surface that are opposite to each other along a first rotation direction;

[0012] wherein the stop surface is configured to contact the first surface when the rotating member rotates relative to the connecting assembly along a first rotational direction, thereby preventing the rotating member from rotating relative to the connecting assembly along the first rotational direction; and the driving surface is configured to contact the second surface when the rotating member rotates relative to the connecting assembly along a second rotational direction, thereby causing a portion of the stop member to elastically deform in a direction away from the rotating member, thereby allowing the rotating member to continue to rotate along the second rotational direction;

[0013] The first rotation direction is opposite to the second rotation direction.

[0014] In some embodiments, the piercing device comprises at least two stops.

[0015] In some embodiments, the puncture device further includes a limiting member, which is sleeved on the puncture assembly, and at least a portion of the limiting member is disposed in the accommodating cavity. The limiting member is configured to drive the puncture assembly to rotate along a second rotation direction, and the rotating member is sleeved on the limiting member. The rotating member is configured to rotate following the limiting member, and the first rotation direction is opposite to the second rotation direction.

[0016] In some embodiments, the connection assembly includes:

[0017] a shell, the shell being used to enclose the accommodating cavity, the accommodating cavity forming an opening toward the proximal end of the shell;

[0018] A cover plate is connected to the shell, the cover plate is arranged to cover the opening, and the cover plate is configured to limit the rotating member in a direction from the distal end to the proximal end.

[0019] In some embodiments, the distal end of the limiting member is connected to the connecting assembly, and the limiting member has a first limiting surface, which is configured to be able to connect with the rotating member and limit the rotating member in a direction from the proximal end to the distal end.

[0020] In some embodiments, the connecting assembly has a second limiting surface, which is configured to be connected to the rotating member and limit the rotating member in a direction from the proximal end to the distal end.

[0021] In some embodiments, the puncture device further includes a sleeve, which is sleeved on the puncture assembly, the proximal end of the sleeve is located in the accommodating cavity and is connected to the limiting member, and the sleeve is configured to drive the puncture assembly to rotate.

[0022] In some embodiments, the puncture assembly comprises:

[0023] a main body portion, the main body portion being inserted through the connecting component, and a proximal end of the main body portion being exposed outside the connecting component;

[0024] The connecting portion is sleeved on the proximal end of the main body, part of the limiting member is exposed from the connecting assembly and connected to the connecting portion, and the connecting portion is configured to drive the limiting member to rotate.

[0025] In some embodiments, the puncture assembly further includes a seal, which is sleeved on the main body and disposed between the main body and the connecting portion, and is configured to seal and connect the main body and the connecting portion.

[0026] In some embodiments, the puncture device further includes a gripping member, which is disposed around the puncture assembly, is connected to the puncture assembly, and is located at a proximal end of the connecting assembly.

[0027] Correspondingly, the present application also provides a surgical instrument, including a puncture device as described in any one of the above embodiments.

[0028] Beneficial Effects: Compared with the prior art, the puncture device provided in the embodiments of the present application includes a connecting assembly, a puncture assembly, a rotating member, and a stopper. The connecting assembly has a receiving cavity; a portion of the puncture assembly is inserted into the receiving cavity, and the puncture assembly is connected to the connecting assembly; at least a portion of the rotating member is disposed in the receiving cavity, the rotating member is sleeved on the puncture assembly, and the rotating member is configured to rotate with the puncture assembly; the stopper is disposed in the receiving cavity, the stopper is connected to the connecting assembly, and the stopper is used to connect with the rotating member to prevent the rotating member from rotating relative to the connecting assembly along a first rotational direction. By providing a rotating member that can rotate with the puncture assembly and providing a device that can prevent the rotating member from rotating, the present application can prevent the puncture assembly from resetting after rotation.

[0029] Accordingly, the present application also provides a surgical instrument including the puncture device according to any one of the above embodiments. The surgical instrument includes the technical features and technical effects of the above puncture assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0031] Figure 1 A schematic diagram of the structure of the puncture device provided in an embodiment of the present application;

[0032] Figure 2 An exploded schematic diagram of the puncture device provided in an embodiment of the present application;

[0033] Figure 3A front view of the puncture device provided in an embodiment of the present application;

[0034] Figure 4 A side view of the puncture device provided in an embodiment of the present application;

[0035] Figure 5 for Figure 4 Cross-sectional view at AA;

[0036] Figure 6 A schematic structural diagram of a puncture assembly in a puncture device provided in an embodiment of the present application rotating along a first rotation direction;

[0037] Figure 7 A schematic structural diagram of a puncture assembly in a puncture device provided in an embodiment of the present application rotating along a second rotation direction;

[0038] Figure 8 A schematic structural diagram of a puncture assembly rotating along a first rotation direction in a puncture device provided by another embodiment of the present application;

[0039] Figure 9 A schematic structural diagram of a puncture assembly rotating along a second rotation direction in a puncture device provided by another embodiment of the present application;

[0040] Figure 10 An oblique view of a limiting member in the puncture device provided in an embodiment of the present application;

[0041] Figure 11 An oblique view of a rotating member in a puncture device provided in an embodiment of the present application;

[0042] Figure 12 An oblique view of the connecting portion of the puncture device provided in an embodiment of the present application;

[0043] Figure 13 A cross-sectional view of a connecting portion of a puncture device provided in an embodiment of the present application;

[0044] Figure 14 This is an oblique view of the shell of the puncture device provided in an embodiment of the present application.

[0045] Figure markings, 100-connecting assembly, 110-accommodating chamber, 120-shell, 121-slot, 122-first welding part, 130-cover, 140-second limiting surface, 200-puncture assembly, 210-main body, 211-needle tip, 220-connecting part, 221-third welding part, 222-connector part, 230-seal, 300-rotating part, 310-protrusion, 311-stop surface, 312-driving surface, 320-base, 330-connecting hole, 400-stop member, 410-first surface, 420-second surface, 500-limiting member, 510-first limiting surface, 520-second welding part, 530-first part, 540-second part, 560-third part, 600-sleeve, 700-gripping member. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0047] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "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 a mechanical connection, an electrical connection, or mutual communication; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly specified and specifically limited. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0048] In the description of this application, it should be understood that the terms "proximal" and "distal" are used with reference to the surgical operator (physician). The "proximal" end is the end of the surgical tool closer to the operator, and the "distal" end is the end farther from the operator relative to the "proximal" end, i.e., the end closer to the patient. In the drawings of this application, the direction indicated by arrow Z is from the "proximal" end toward the "distal", and the direction from the "distal" end toward the "proximal" end is the opposite direction of the direction indicated by arrow Z.

[0049] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application.

[0050] EUS-BD (endoscopic ultrasound-guided biliary drainage) uses an endoscope and ultrasound technology to guide bile duct drainage. This method bypasses the blocked bile duct and places a drain in the stomach or duodenum to restore the normal flow of bile. This technique is often used in patients who cannot undergo bile duct drainage via traditional endoscopic approaches. EUS-BD can provide more accurate image guidance to ensure the correct placement of the drain and reduce the risk of surgical complications.

[0051] However, with current technology, the direction of the guidewire after it extends out of the needle tip 211 can only be adjusted manually by the doctor. However, after the needle tip 211 is rotated to the desired position, other components will produce elastic deformation and elastic potential energy, and the needle tip 211 will tend to rotate and reset under the influence of other components. To prevent the needle tip 211 from resetting and maintain its angle, the doctor needs to free up at least one hand to fix the rotation angle of the needle tip 211 to prevent the needle tip 211 from resetting, which makes subsequent operations inconvenient for the doctor.

[0052] In order to solve the technical problem that the needle tip 211 has a tendency to reset after rotation, which makes it inconvenient for doctors to operate, the first embodiment of the present application provides a puncture device, see Figure 1 、 Figure 3 、 Figure 4 and Figure 5 The puncture device includes a connecting component 100, a puncture component 200, a rotating member 300 and a stop member 400. The connecting component 100 has a accommodating cavity 110; a portion of the puncture component 200 is inserted into the accommodating cavity 110, and the puncture component 200 is connected to the connecting component 100; at least a portion of the rotating member 300 is arranged in the accommodating cavity 110, the rotating member 300 is connected to the puncture component 200, and the rotating member 300 is configured to rotate with the puncture component 200; the stop member 400 is arranged in the accommodating cavity 110, the stop member 400 is connected to the connecting component 100, and the stop member 400 is used to contact the rotating member 300 to prevent the rotating member 300 from rotating relative to the connecting component 100 along the first rotation direction X.

[0053] The puncture assembly 200 has a central axis C, and the first rotation direction X is the direction of rotation around the central axis C. Specifically, the first rotation direction X is the direction indicated by the arrow X in the accompanying drawings, and the second rotation direction Y is the rotation direction opposite to the first rotation direction X, and is the direction indicated by the arrow Y in the accompanying drawings. Specifically, Figure 6-Figure 8Observed from the angle shown, the first rotation direction X is counterclockwise, and the second rotation direction Y is clockwise.

[0054] It is understood that in other embodiments, such as Figure 6-Figure 8 As viewed from the angle shown, by adjusting the installation direction of the rotating member 300 and the installation position of the stop member 400 , the first rotation direction X can be clockwise, and the second rotation direction Y can be counterclockwise.

[0055] In some embodiments, the rotating member 300 is connected to the side wall of the puncture assembly 200. Furthermore, in some embodiments, the rotating member 300 has a connecting hole 330, and the puncture assembly 200 is inserted into the connecting hole 330, that is, the rotating member 300 is sleeved on the puncture assembly 200.

[0056] It can be understood that the rotating member 300 will collide with the stop member 400 during the process of rotating along the first rotation direction X. In other words, the stop member 400 is used to resist the rotating member 300 rotating along the first rotation direction X to prevent the rotating member 300 from continuing to rotate along the first rotation direction X, thereby achieving the limitation of the rotating member 300 along the first rotation direction X.

[0057] In some embodiments, the rotating member 300 is configured to rotate along with the puncture assembly 200. Specifically, the rotating member 300 can remain relatively stationary with the puncture assembly 200 along the first rotation direction X or the second rotation direction Y. When the puncture assembly 200 rotates relative to the connecting assembly 100, the rotating member 300 rotates along with the puncture assembly 200; when the rotating member 300 stops rotating relative to the connecting assembly 100, the puncture assembly 200 also stops rotating.

[0058] In other embodiments, the rotating member 300 is configured to rotate relative to the puncture assembly 200 by a certain angle and then rotate along with the puncture assembly 200 to maintain relative stationary state. Specifically, when the puncture assembly 200 rotates relative to the connecting assembly 100 in a first rotational direction X, the puncture assembly 200 first rotates relative to the rotating member 300. After rotating by a certain angle, the puncture assembly 200 and the rotating member 300 remain relatively stationary. The stopper 400 prevents the rotating member 300 from continuing to rotate in the first rotational direction X and also prevents the puncture assembly 200 from continuing to rotate relative to the connecting assembly 100 in the first direction. When the puncture assembly 200 rotates relative to the connecting assembly 100 in a second rotational direction Y, the puncture assembly 200 first rotates relative to the rotating member 300. After rotating by a certain angle, the rotating member 300 begins to rotate along the second rotational direction Y along with the puncture assembly 200.

[0059] In some embodiments, see Figure 5The puncture assembly 200 includes a needle tip 211, which is disposed at the distal end of the puncture assembly 200. Figure 5 In the figure, the needle tip 211 is arranged at the left end of the puncture assembly 200.

[0060] It can be understood that in some embodiments, the connecting assembly 100 is used to connect the handle, and the doctor uses one hand to hold the handle and the other hand to rotate the puncture assembly 200 so that the puncture assembly 200 can rotate unidirectionally relative to the connecting assembly 100.

[0061] In the above embodiment, when the doctor rotates the puncture assembly 200 to the desired angle, the puncture assembly 200 and the rotating member 300 simultaneously tend to return to their original position relative to the connecting assembly 100. Immediately or after the puncture assembly 200 and the rotating member 300 have returned to their original position, the stopper 400 prevents them from returning to their original position, thereby freeing the doctor's hand to rotate the puncture assembly 200 and the rotating member 300 for other operations. Furthermore, placing the rotating member 300 and the stopper 400 within the accommodating cavity 110 not only isolates the rotating member 300 and the stopper 400, which act as the operating member, from other components during operation, preventing interference with other components, but also limits the position of the rotating member 300, preventing it from moving widely and reducing operational difficulty.

[0062] In some embodiments, see Figure 6-Figure 8 and Figure 11 The stop member 400 includes a first surface 410 and a second surface 420, and the first surface 410 and the second surface 420 are connected; the rotating member 300 includes a plurality of protrusions 310 surrounding the puncture assembly 200, and the protrusion 310 has a stop surface 311 and a driving surface 312 that are opposite to each other along the first rotation direction X; wherein the stop surface 311 is configured to contact the first surface 410 when the rotating member 300 rotates relative to the connecting assembly 100 along the first rotation direction X, and prevent the rotating member 300 from rotating relative to the connecting assembly 100 along the first rotation direction X; the driving surface 312 is configured to contact the second surface 420 when the rotating member 300 rotates relative to the connecting assembly 100 along the second rotation direction Y, and causes a portion of the stop member 400 to generate elastic deformation in a direction away from the rotating member 300 and leave the moving path of the stop member 400, so that the rotating member 300 can continue to rotate along the second rotation direction Y; the first rotation direction X is opposite to the second rotation direction Y.

[0063] Specifically, when the rotating member 300 rotates relative to the connecting assembly 100 along the first rotation direction X, the first surface 410 contacts the stop surface 311. In some embodiments, the stop member 400 does not produce elastic deformation; in other embodiments, the stop member 400 produces elastic deformation along the extension direction of the stop member 400; in some other embodiments, the stop member 400 produces elastic deformation toward the rotating member 300, so that one end of the stop member 400 extends into the gap between adjacent protrusions 310.

[0064] Specifically, the stopper 400 may be a thin plate-shaped spring piece with one end connected to the connecting assembly 100 and the other end extending into the accommodating cavity 110 so as to generate elastic deformation.

[0065] For further information, see Figure 14 The connecting component 100 has at least one slot 121 , and one end of the stopper 400 is inserted into the slot 121 .

[0066] In other embodiments, the rotating member 300 is a ratchet-shaped rotating member, and the stop member 400 is a pawl-shaped stop member. One end of the stop member 400 is rotatably connected to the connecting assembly 100 so that the other end of the stop member 400 can move toward or away from the rotating member 300, and the other end of the stop member 400 has a tendency to move toward the rotating member 300. When the rotating member 300 rotates relative to the connecting assembly 100 in a first rotational direction X, the other end of the stop member 400, as it tends to move toward the rotating member 300, extends into the gap between adjacent serrations on the rotating member 300, thereby preventing the rotating member 300 from rotating in the first rotational direction X. When the rotating member 300 rotates relative to the connecting assembly 100 in a second rotational direction Y, the rotating member 300 pushes the other end of the stop member 400 away from the rotating member 300, overcoming the tendency of the other end to move toward the rotating member 300, thereby preventing the stop member 400 from preventing the rotating member 300 from continuing to rotate in the second rotational direction Y. In this embodiment, the tendency of the other end of the stop member 400 to move toward the rotating member 300 can come from the elastic member connected between the stop member 400 and the connecting assembly 100, that is, the elastic member can push the stop member 400 toward the rotating member 300, so that the stop member 400 can generate a tendency to move toward the rotating member 300.

[0067] In the above embodiment, the elastically deformable stopper 400 is provided to restrict the rotatable member 300 from rotating in one direction, thereby enabling the puncture assembly 200 to rotate in one direction only without causing a rotational reset. While ensuring a relatively simple structure, a reliable one-way rotation effect is achieved.

[0068] It can be understood that when the rotating member 300 rotates along the second rotation direction Y, when a protrusion 310 passes the stop member 400, the elastic potential energy of the stop member 400 is released, and the stop member 400 resets and collides with part of the multiple protrusions 310 to make a collision sound. The collision sound can prompt the doctor that the rotation has been successful, and the doctor can judge the rotation angle of the puncture assembly 200 by the number of collision sounds.

[0069] In some embodiments, see Figure 8 and Figure 9 , the piercing device includes at least two stoppers 400 .

[0070] It can be understood that in some embodiments, the puncture assembly 200 has a stronger tendency to rotate and reset after rotation. Providing at least two stops 400 can make the stop 400 work more reliably and avoid the puncture assembly 200 from rotating and resetting after rotation due to failure of the stop 400.

[0071] In some embodiments, please refer again to Figure 5 and Figure 10 The puncture device also includes a limit member 500, which is sleeved on the puncture assembly 200. At least a portion of the limit member 500 is disposed in the accommodating chamber 110. The limit member 500 is configured to drive the puncture assembly 200 to rotate along the second rotation direction Y. The rotating member 300 is sleeved on the limit member 500. The rotating member 300 is configured to rotate along with the limit member 500. The first rotation direction X is opposite to the second rotation direction Y.

[0072] Furthermore, the rotating member 300 includes a base 320 , and a plurality of protrusions 310 are connected to the base 320 along a circumferential direction of the base 320 .

[0073] In some embodiments, the base 320 has a connecting hole 330, the limiting portion includes a second portion 540, the puncture assembly 200 is inserted into the second portion 540, and the second portion 540 is inserted into the connecting hole 330. Furthermore, the connecting hole 330 is polygonal in shape, and the cross-sectional shape of the second portion 540 is the same as that of the connecting hole 330. For details, please refer to Figure 10 and Figure 11 The shape of the connecting hole 330 and the cross-sectional shape of the second portion 540 are one of a triangle, a quadrilateral, a pentagon, and a hexagon, so that the rotating member 300 can rotate along with the limiting member 500, and the limiting member 500 can rotate along with the rotating member 300.

[0074] Understandably, please refer again Figure 5Because the rotating member 300 has a base 320, the minimum radial dimension of the rotating member 300 is still relatively large, and the melting depth is difficult to exceed the minimum radial dimension of the rotating member 300, making it difficult to weld the rotating member 300 to the main body 210 of the puncture assembly 200. In the above embodiment, by mounting the rotating member 300 on the smaller radial limiter 500, and since the limiter 500 can rotate with the puncture assembly 200, there is no need to consider the direct connection between the rotating member 300 and the puncture assembly 200, thereby reducing the difficulty of assembling the puncture device.

[0075] In some embodiments, please refer again to Figure 5 and Figure 14 The connecting assembly 100 includes a shell 120 and a cover plate 130. The shell 120 is used to enclose a accommodating cavity 110. The accommodating cavity 110 forms an opening toward the proximal end in the shell 120, that is, the opening direction of the accommodating cavity 110 in the shell 120 is opposite to the direction indicated by the arrow Z; the cover plate 130 is connected to the shell 120, and the cover plate 130 covers the opening. The cover plate 130 is configured to limit the rotating member 300 in the direction from the distal end to the proximal end, that is, the cover plate 130 is configured to limit the rotating member 300 in the direction opposite to the direction indicated by the arrow Z.

[0076] Furthermore, the shell 120 includes a first welding portion 122 disposed around the cover plate 130 to reduce the thickness of the connection between the shell 120 and the cover plate 130 , so that the connection portion between the cover plate 130 and the shell 120 can be melted, thereby completing the welding.

[0077] To ensure that the rotating member 300 can rotate with the puncture assembly 200, a gap is required between the connecting assembly 100 and the rotating member 300 to prevent the connecting assembly 100 from clamping the rotating member 300 and preventing it from rotating. However, due to the presence of the gap, the rotating member 300 may move. To prevent the rotating member 300 from moving too much, in the above embodiment, a cover plate 130 is provided at the proximal end of the rotating member 300. This cover plate 130 can engage the rotating member 300 when the rotating member 300 moves from the distal end to the proximal end, preventing the rotating member 300 from moving further toward the proximal end, that is, moving in the direction opposite to the direction indicated by arrow Z. This effectively reduces the movement of the rotating member 300, further reducing the difficulty of operating the puncture device.

[0078] In some embodiments, please refer again to Figure 5 and Figure 10 The distal end of the limiting member 500 is connected to the connecting assembly 100, and the limiting member 500 has a first limiting surface 510. The first limiting surface 510 is configured to be connected to the rotating member 300 and limit the rotating member 300 in the direction from the proximal end to the distal end, that is, to limit the rotating member 300 in the direction indicated by the arrow Z.

[0079] Furthermore, the limiting member 500 further includes a first portion 530 disposed at the distal end of the second portion 540, and the puncture assembly 200 is disposed through the first portion 530. A first limiting surface 510 is disposed on the first portion 530, and the second portion 540 is connected to the first limiting surface 510. The rotating member 300 sleeved on the second portion 540 can be in contact with the first limiting surface 510.

[0080] In some embodiments, the retainer 500 further includes a second weld portion 520 connected to the distal end of the first portion 530. The second weld portion 520 surrounds the puncture assembly 200, and the puncture assembly 200 is inserted through the second weld portion 520. The minimum radial dimension of the second weld portion 520 is smaller than the minimum radial dimension of the first portion 530, and the second weld portion 520 is in contact with the housing 120. In this embodiment, the thickness of the second weld portion 520 is smaller than that of the first portion 530, thereby reducing the contact area between the distal end of the retainer 500 and the housing 120, thereby preventing excessive friction between the retainer 500 and the housing 120, which would increase the difficulty of rotating the puncture assembly 200. Furthermore, the thickness of the second weld portion 520 is smaller than that of the first portion 530, which also reduces the difficulty of welding the retainer 500 to the puncture assembly 200.

[0081] To ensure that the rotating member 300 can rotate with the puncture assembly 200, a gap is required between the connecting assembly 100 and the rotating member 300 to prevent the connecting assembly 100 from clamping the rotating member 300 and preventing it from rotating. However, due to the presence of the gap, the rotating member 300 may move. To prevent the rotating member 300 from moving too much, in the above embodiment, the housing 120 connected to the stopper 500 can limit the stopper 500 relative to the housing 120 in the proximal-to-distal direction, and the first stopper surface 510 can also limit the rotating member 300 relative to the stopper 500 in the proximal-to-distal direction. In other words, the housing 120 can limit the rotating member 300 in the proximal-to-distal direction. Combined with the limiting effect of the cover plate 130 on the rotating member 300, the rotating member 300 is limited in both the proximal-to-distal and distal-to-proximal directions relative to the connecting assembly 100. The direction from the proximal end to the distal end is the direction indicated by the arrow Z, and the direction from the distal end to the proximal end is the direction opposite to the direction indicated by the arrow Z.

[0082] In some embodiments, see Figure 14 The connecting assembly 100 has a second limiting surface 140, which is configured to be in contact with the rotating member 300 and to limit the rotating member 300 in a direction from the proximal end to the distal end. The direction from the proximal end to the distal end is the direction indicated by the arrow Z.

[0083] To ensure that the rotating member 300 can rotate with the puncture assembly 200, a gap must exist between the connecting assembly 100 and the rotating member 300 to prevent the connecting assembly 100 from clamping the rotating member 300 and preventing it from rotating. However, due to the presence of the gap, the rotating member 300 may move. To prevent the rotating member 300 from moving too much, in the above embodiment, the housing 120 is provided with a second limiting surface 140 to limit the rotating member 300 in the proximal-to-distal direction. Combined with the limiting effect of the cover plate 130 on the rotating member 300, the rotating member 300 is limited relative to the connecting assembly 100 in both the proximal-to-distal direction and the distal-to-proximal direction. The proximal-to-distal direction is the direction indicated by arrow Z, and the distal-to-proximal direction is the direction opposite to the direction indicated by arrow Z.

[0084] In some embodiments, please refer again to Figure 1 、 Figure 2 and Figure 5 The puncture device further includes a cannula 600, which is sleeved on the puncture assembly 200. The proximal end of the cannula 600 is located in the accommodating cavity 110 and is connected to the limiting member 500. The cannula 600 is configured to drive the puncture assembly 200 to rotate. The proximal end of the cannula 600, i.e., the end closer to the operator, is Figure 5 The right end of the middle sleeve 600.

[0085] Furthermore, the puncture assembly 200 is welded to the cannula 600, allowing the puncture assembly 200 to rotate with the cannula 600, and the cannula 600 can also rotate with the puncture assembly 200. The stopper 500 is welded to the cannula 600, allowing the stopper 500 to rotate with the cannula 600, and the cannula 600 can also rotate with the stopper 500. Furthermore, the proximal end of the cannula 600 is penetrated by the second welding portion 520, which is welded to the cannula 600. Because the second welding portion 520 is thinner than the first portion 530, the second welding portion 520 is more easily welded to the cannula 600.

[0086] It can be understood that in the above embodiment, the sleeve 600 connected to the puncture assembly 200 can increase the partial strength of the puncture assembly 200, and the probability of bending of the puncture assembly 200 located in the sleeve 600 is reduced, so that the pushing performance of the puncture assembly 200 is better.

[0087] In some embodiments, please refer again to Figure 1 、 Figure 2 and Figure 5The puncture assembly 200 includes a main body 210 and a connecting portion 220. The main body 210 is inserted into the connecting assembly 100, and the proximal end of the main body 210 is exposed to the connecting assembly 100; the connecting portion 220 is sleeved on the proximal end of the main body 210, and a portion of the limiting member 500 is exposed to the connecting assembly 100 and connected to the connecting portion 220. The connecting portion 220 is configured to drive the limiting member 500 to rotate. Among them, the proximal end of the main body 210 is the end of the main body 210 that is closer to the operator, i.e. Figure 5 The right end of the middle body portion 210.

[0088] Furthermore, in some embodiments, the connecting portion 220 includes a connector portion 222 located at the proximal end, and the connector portion 222 is in the shape of a Luer connector.

[0089] Furthermore, in some embodiments, the connecting portion 220 includes a third welding portion 221 located at the distal end, and the third welding portion 221 is arranged around the third portion 560. The limiting member 500 also includes a third portion 560 connected to the side of the second portion 540 away from the first portion 530. The third portion 560 is exposed to the connecting assembly 100 and is passed through the third welding portion 221 and is welded to the third welding portion 221.

[0090] In other embodiments, the third welding portion 221 extends into the connecting assembly 100 and is connected to the third portion 560 .

[0091] In the above embodiment, the connecting portion 220 is provided to connect to and communicate with other devices such as a syringe at the proximal end to inject or aspirate fluid into the main body 210 .

[0092] In some embodiments, please refer again to Figure 2 and Figure 5 The puncture assembly 200 also includes a seal 230, which is sleeved on the main body 210 and disposed between the main body 210 and the connecting portion 220. The seal 230 is configured to seal and connect the main body 210 and the connecting portion 220.

[0093] In some embodiments, the puncture assembly 200 includes a plurality of seals 230 to enhance the sealing effect.

[0094] Specifically, the sealing member 230 is a sealing ring sleeved on the main body 210 .

[0095] In the above embodiment, the sealing member 230 is provided to prevent liquid or gas from leaking out at the junction of the connecting portion 220 and the main body 210 .

[0096] In some embodiments, please refer again to Figure 1 、 Figure 2 and Figure 5The puncture device further includes a gripping member 700, which is arranged around the puncture assembly 200, is connected to the puncture assembly 200, and is located at the proximal end of the connecting assembly 100. The proximal end of the connecting assembly 100 is the end closer to the operator, i.e. Figure 5 The right end of the middle connecting component 100.

[0097] In some embodiments, the surface of the gripping member 700 away from the puncture assembly 200 is provided with a concave-convex pattern to increase friction and facilitate rotation by the doctor.

[0098] In some embodiments, a surface of the gripping member 700 away from the puncture assembly 200 is provided with raised scales so that the doctor can rotate the transmission assembly more accurately.

[0099] It is understandable that the maximum radial dimension of the puncture assembly 200 is relatively small, which is not convenient for holding. In the above embodiment, the gripping member 700 connected to the puncture assembly 200 is provided to facilitate the doctor to hold and rotate the puncture assembly 200.

[0100] Accordingly, the present application also provides a surgical instrument, including the puncture device according to any one of the above embodiments. The surgical instrument includes the technical features and technical effects of the above puncture device.

[0101] The above is a detailed introduction to a puncture device and surgical instrument provided in the embodiments of the present application. Specific examples are used in this application to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A puncture device, characterized in that: include: A connecting assembly (100), wherein the connecting assembly (100) has a receiving cavity (110); a puncture assembly (200), wherein a portion of the puncture assembly (200) is disposed in the accommodating cavity (110), and the puncture assembly (200) is connected to the connecting assembly (100); a rotating member (300), at least a portion of which is disposed in the accommodating cavity (110), the rotating member (300) being connected to the puncture assembly (200), and the rotating member (300) being configured to rotate along with the puncture assembly (200); A stopper (400), wherein the stopper (400) is disposed in the accommodating cavity (110), the stopper (400) is connected to the connecting assembly (100), and the stopper (400) is used to contact the rotating member (300) to prevent the rotating member (300) from rotating relative to the connecting assembly (100) along a first rotation direction (X).

2. The puncture device according to claim 1, characterized in that The stopper (400) includes a first surface (410) and a second surface (420), wherein the first surface (410) and the second surface (420) are connected; The rotating member (300) includes a plurality of protrusions (310) surrounding the puncture assembly (200), and the protrusions (310) have a stop surface (311) and a driving surface (312) that are opposite to each other along a first rotation direction (X); wherein the stop surface (311) is configured to contact the first surface (410) when the rotating member (300) rotates relative to the connecting assembly (100) along a first rotation direction (X), and prevent the rotating member (300) from rotating relative to the connecting assembly (100) along the first rotation direction (X); and the driving surface (312) is configured to contact the second surface (420) when the rotating member (300) rotates relative to the connecting assembly (100) along a second rotation direction (Y), and causes a portion of the stop member (400) to generate elastic deformation in a direction away from the rotating member (300), so that the rotating member (300) can continue to rotate along the second rotation direction (Y); The first rotation direction (X) is opposite to the second rotation direction (Y).

3. The puncture device according to claim 1, characterized in that The piercing device comprises at least two stoppers (400).

4. The puncture device according to claim 1, characterized in that The puncture device further includes a limiting member (500), which is sleeved on the puncture assembly (200), at least a portion of which is disposed in the accommodating cavity (110), and the limiting member (500) is configured to drive the puncture assembly (200) to rotate along a second rotation direction (Y), the rotating member (300) is sleeved on the limiting member (500), and the rotating member (300) is configured to rotate following the limiting member (500), and the first rotation direction (X) is opposite to the second rotation direction (Y).

5. The puncture device according to claim 4, characterized in that The connection assembly (100) comprises: a housing (120), the housing (120) being used to enclose the accommodating cavity (110), the accommodating cavity (110) forming an opening toward the proximal end in the housing (120); A cover plate (130) is connected to the housing (120), the cover plate (130) covers the opening, and the cover plate (130) is configured to limit the rotation member (300) in a direction from the distal end to the proximal end.

6. The puncture device according to claim 4, characterized in that The distal end of the limiting member (500) is connected to the connecting assembly (100), and the limiting member (500) has a first limiting surface (510). The first limiting surface (510) is configured to be able to connect with the rotating member (300) and limit the rotating member (300) in a direction from the proximal end to the distal end.

7. The puncture device according to claim 4, characterized in that The connecting assembly (100) has a second limiting surface (140), and the second limiting surface (140) is configured to be connected to the rotating member (300) and to limit the rotating member (300) in a direction from the proximal end to the distal end.

8. The puncture device according to claim 4, characterized in that The puncture device also includes a sleeve (600), which is sleeved on the puncture assembly (200). The proximal end of the sleeve (600) is located in the accommodating cavity (110) and is connected to the limiting member (500). The sleeve (600) is configured to drive the puncture assembly (200) to rotate.

9. The puncture device according to claim 4, characterized in that The puncture assembly (200) comprises: A main body (210), the main body (210) being inserted into the connecting assembly (100), and a proximal end of the main body (210) being exposed from the connecting assembly (100); A connecting portion (220) is sleeved on the proximal end of the main body (210), a portion of the limiting member (500) is exposed from the connecting assembly (100) and connected to the connecting portion (220), and the connecting portion (220) is configured to drive the limiting member (500) to rotate.

10. The puncture device according to claim 9, characterized in that The puncture assembly (200) further includes a seal (230), which is sleeved on the main body (210) and disposed between the main body (210) and the connecting portion (220). The seal (230) is configured to seal and connect the main body (210) and the connecting portion (220).

11. The puncture device according to claim 9, characterized in that The puncture device further includes a gripping member (700), which is arranged around the puncture assembly (200), the gripping member (700) is connected to the puncture assembly (200), and the gripping member (700) is located at the proximal end of the connecting assembly (100).

12. A surgical instrument, characterized in that: Comprising the puncture device according to any one of claims 1-11.

Images