Clamp lifting seat and endoscope

Abstract

The invention provides a clamp lifting seat. The forceps lifting seat comprises a rotating shaft end and a far end, a first guide section extending from the far end to the rotating shaft end is arranged on the front face of the forceps lifting seat, the first guide section is provided with a connecting end far away from the rotating shaft end, and the first guide section is constructed to guide the medical instrument to a preset extending path or a preset withdrawing path; a second guide section is further arranged on the clamp lifting seat, and the second guide section obliquely extends from the connecting end to the back face of the clamp lifting seat and away from the rotating shaft end; and the second guide section is configured to support the first specification instrument which is located on the withdrawing path and provided with a step part, so that the step part moves in the direction away from the forceps lifting seat. According to the forceps lifting seat provided by the invention, when a medical instrument penetrating through the instrument channel is a first-specification instrument with a large size, the first-specification instrument cannot be blocked in the recovery process.

Description

Technical Field

[0001] The present invention relates to the field of medical technology, in particular to a lifting forceps seat and an endoscope. Background Art

[0002] As a non-invasive imaging method, endoscopic imaging can effectively extend human vision and is widely used in imaging diagnosis and image-guided treatment in many fields such as the digestive tract, cardiovascular and cerebrovascular system, urinary system, and respiratory system, greatly promoting the accuracy of disease examination.

[0003] The part of the endoscope that enters the human body is a slender insertion portion, which is usually provided with an instrument channel. When the endoscope is used for diagnosis or treatment, the medical instrument can be passed through the instrument channel to reach the far end of the endoscope to assist in diagnosis or treatment. Most existing endoscopes are provided with a lifting clamp seat to adjust the direction in which the medical instrument extends out of the instrument channel.

[0004] However, the existing lifting forceps seat is prone to very obvious jamming during the withdrawal of larger medical devices such as electrosurgical drainage stents and biopsy forceps, resulting in a poor user experience. Summary of the invention

[0005] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, a lifting forceps seat is provided. The lifting forceps seat includes a rotating shaft end and a distal end, and a first guide section extending from the distal end toward the rotating shaft end is provided on the front of the lifting forceps seat, and the first guide section has a connecting end away from the rotating shaft end, and the first guide section is configured to guide the medical device to a preset extension path or a preset withdrawal path; the lifting forceps seat is also provided with a second guide section, and the second guide section extends obliquely from the connecting end toward the back of the lifting forceps seat and away from the rotating shaft end; wherein the second guide section is configured to support a first specification instrument with a step portion located on the withdrawal path, so that the step portion moves in a direction away from the lifting forceps seat.

[0006] The lifting forceps seat provided by the present invention will not get stuck during the recovery process of the first-specification instrument when the medical instrument passing through the instrument channel is a first-specification instrument. The first-specification instrument may refer to a medical instrument of a larger size. For example, when the first-specification instrument is an electrosurgical excision and drainage stent, the second guide surface supports and guides the mushroom-head end of the electrosurgical excision and drainage stent, so that the mushroom-head end will not get stuck during recovery; for example, when the first-specification instrument is a biopsy forceps, the second guide surface supports and guides the step surface of the biopsy forceps, so that the step surface will not get stuck during recovery. Therefore, such a lifting forceps seat can significantly reduce the sense of jamming of the first-specification instrument during the recovery process and enhance the user's clinical experience.

[0007] Exemplarily, the first guide section includes two first guide surfaces, the two first guide surfaces are symmetrically arranged about the length axis of the lifting clamp seat, and an angle of not less than 90° is formed between the two first guide surfaces.

[0008] Exemplarily, the first guide segment includes a first central groove formed between the two first guide surfaces.

[0009] Exemplarily, the cross-section of the first central groove is arc-shaped.

[0010] Exemplarily, the second guide section includes two second guide surfaces, and the two second guide surfaces are symmetrically arranged about the length axis of the lifting clamp seat.

[0011] Exemplarily, the included angle between the second guide surface and the first guide surface is between 30° and 60°.

[0012] Exemplarily, a third guide section is also provided on the lifting clamp seat, and the third guide section extends obliquely from the connecting end toward the back side of the lifting clamp seat and away from the rotating shaft end. The third guide section is located in the middle area of ​​the second guide section, and the third guide section is configured to guide the second specification instrument to a preset extension path.

[0013] Exemplarily, the second guide segment includes two second guide surfaces, and the third guide segment is formed between the two second guide surfaces.

[0014] Exemplarily, the angle between the second guide surface and the side wall of the third guide segment is not less than 135°.

[0015] Exemplarily, the third guide section includes two third guide surfaces, the two third guide surfaces are symmetrically arranged about the length axis of the lifting clamp seat, and an angle of not less than 90° is formed between the two third guide surfaces.

[0016] Exemplarily, the first guide section includes two first guide surfaces, the two first guide surfaces are symmetrically arranged about the length axis of the lifting clamp seat, and the angle between the two first guide surfaces is smaller than the angle between the two third guide surfaces.

[0017] Exemplarily, a third central groove is provided on the third guide segment, and the third central groove is formed between the two third guide surfaces.

[0018] Exemplarily, the first guide section includes a first center groove and two first guide surfaces, the two first guide surfaces are symmetrically arranged about the length axis of the lifting clamp seat, the first center groove is formed between the two first guide surfaces, and the angle between the central axis of the first center groove and the central axis of the third center groove is 10° to 45°.

[0019] Exemplarily, the cross-section of the third central groove is arc-shaped.

[0020] Exemplarily, the third center groove has an arc diameter, and the arc diameter is no greater than 19G.

[0021] Exemplarily, the third guide segment has a tangent point that is tangent to a second-specification instrument having a predetermined diameter, and the first guide segment and the second guide segment intersect at the tangent point.

[0022] Exemplarily, the second guide section includes a multi-stage guide surface, and when the first specification instrument is withdrawn on the withdrawal path, the multi-stage guide surface contacts the step portion in sequence.

[0023] According to another aspect of the present invention, an endoscope is provided. The endoscope includes a head end portion, and any one of the forceps lifting seats described above is provided on the head end portion.

[0024] Exemplarily, the tip end includes an ultrasound probe, and a central axis of the ultrasound probe is coplanar with a center line of the extension path.

[0025] A series of simplified concepts are introduced in the summary of the invention, which will be further described in detail in the detailed description. The summary of the invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0026] The advantages and features of the present invention are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following drawings of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0028] Figure 1 is a schematic diagram of an endoscope according to an exemplary embodiment of the present invention;

[0029] Figure 2 A perspective view of a head end portion according to an exemplary embodiment of the present invention;

[0030] Figure 3 It is a three-dimensional diagram of a head end according to an exemplary embodiment of the present invention, wherein a first specification instrument is inserted into the instrument channel;

[0031] Figure 4 for Figure 3 A partial cross-sectional view of the head end shown;

[0032] Figure 5 is a three-dimensional diagram of a head end portion according to an exemplary embodiment of the present invention, wherein a second specification instrument is inserted through the instrument channel;

[0033] Figure 6 for Figure 5 A partial cross-sectional view of the head end shown;

[0034] Figure 7 A three-dimensional diagram of a lifting clamp seat according to an exemplary embodiment of the present invention;

[0035] Figure 8 A three-dimensional diagram of a lifting clamp seat according to an exemplary embodiment of the present invention;

[0036] Fig. 9 for Figure 8 A three-dimensional view of the lifting clamp seat shown in another direction;

[0037] Fig.10 for Figure 8 A cross-sectional view of the lifting clamp seat shown;

[0038] Fig.11 It is a partial enlarged view of the cross section of the lifting forceps seat according to an exemplary embodiment of the present invention, wherein the small dotted circle represents the cross section of the second specification instrument with the smallest size, and the large dotted circle represents the cross section of the second specification instrument with the largest size;

[0039] Fig.12 A three-dimensional diagram of a lifting clamp seat according to an exemplary embodiment of the present invention;

[0040] Fig.13 A three-dimensional diagram of a lifting clamp seat according to an exemplary embodiment of the present invention;

[0041] Fig.14 It is a three-dimensional view of a lifting forceps seat according to an exemplary embodiment of the present invention, wherein the lifting forceps seat supports a first specification instrument.

[0042] The above drawings include the following reference numerals:

[0043] 100, lifting forceps seat; 110, first guide section; 111, first guide surface; 112, first center groove; 113, connecting end; 120, second guide section; 121, second guide surface; 1211, first-level guide surface; 1212, second-level guide surface; 130, third guide section; 131, third guide surface; 132, third center groove; 200, head end; 210, lighting window; 220, camera; 300, insertion part; 330, instrument channel; 400, operating part; 500, light guide hose; 600, light guide part; 700, cable; 800, ultrasonic connector; 910, first specification instrument; 911, step part; 920, second specification instrument. DETAILED DESCRIPTION

[0044] In the following description, a large amount of details are provided so that the present invention can be thoroughly understood. However, it will be appreciated by those skilled in the art that the following description only exemplarily illustrates a preferred embodiment of the present invention, and the present invention can be implemented without one or more such details. In addition, in order to avoid confusion with the present invention, some technical features well known in the art are not described in detail.

[0045] According to one aspect of the present invention, a forceps lifting seat is provided. The forceps lifting seat can be applied to any suitable device, including but not limited to an endoscope. Therefore, according to another aspect of the present invention, an endoscope is also provided. Specifically, see Figure 1 An endoscope provided by an embodiment of the present invention includes an insertion portion 300, an operation portion 400, a light guide hose 500, a light guide portion 600, a cable 700 and an ultrasonic connector 800 which are connected in sequence.

[0046] The insertion portion 300 generally includes an instrument channel 330, one end of which extends to the operating portion 400 and the other end extends to the head portion 200 described later. Thus, the medical device inserted into the instrument channel 330 also has one end located at the operating portion 400 and the other end extending from the head portion 200. The operator can operate the medical device on the operating portion 400 side and use the end of the medical device extending from the head portion 200 for auxiliary diagnosis or treatment. The medical device may include, for example, Figure 3 and Figure 4 The first specification device 910 shown, and Figure 5 and Figure 6 The second specification instrument 920 is shown, wherein the first specification instrument 910 may be a larger medical device, and the first specification instrument 910 may have a step portion 911, for example, the first specification instrument 910 may be an electrosurgical drainage stent, and the second specification instrument 920 may be a smaller medical device, for example, the second specification instrument 920 may be a puncture needle sheath, a guide wire, etc.

[0047] The insertion portion 300 may further include a head portion 200. The head portion 200 may contain components indispensable for endoscopic imaging, for example, a lighting window 210, a camera 220, and an ultrasound probe, etc. Usually, the head portion 200 is hard.

[0048] The light guide 600 can be connected to an external light source device and connected to an external endoscope host through the light source device, or the light guide 600 can also be connected to the light source device and the endoscope host respectively. The irradiation light generated by the light source device can be transmitted to the illumination window 210 of the head end 200 through the light guide medium provided in the light guide 600, the light guide hose 500, the operating part 400 and the insertion part 300, and then emitted to illuminate the subject; after the camera 220 of the head end 200 collects the light returned from the subject, it generates an optical image signal of the subject and transmits it to the light guide 600, which is further transmitted to the external endoscope host for image processing, thereby obtaining an optical image of the subject. For ease of description, this application takes an ultrasonic endoscope as an example for introduction, but it can be understood that the solution provided in this application is also applicable to endoscopes that do not have an ultrasonic detection function, for example, it can be applied to duodenal endoscopes, etc. For an ultrasonic endoscope, the light guide 600 can also be connected to an ultrasonic connector 800 via a cable 700. The setting of the ultrasonic connector 800 enables the endoscope to realize the function of ultrasonic detection, and the endoscope can transmit ultrasonic signals to an external ultrasonic host through the ultrasonic connector 800, and the ultrasonic host can process the ultrasonic signals to obtain an ultrasonic image of the subject.

[0049] The head end 200 may be provided with a forceps lifting seat 100, and the forceps lifting seat 100 of the embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings. For the convenience of description, the distal end mentioned below refers to the end of the endoscope that is closer to the observed object when the operator uses the endoscope; the proximal end mentioned below refers to the end of the endoscope that is closer to the operator when the operator uses the endoscope.

[0050] The forceps lifting seat 100 may include a rotating shaft end and a distal end. The distal end of the forceps lifting seat 100 is close to the distal end of the head end 200, and the rotating shaft end of the forceps lifting seat 100 is close to the proximal end of the head end 200. The rotating shaft end of the forceps lifting seat 100 may be provided with a connecting portion, which may be in the form of a rotating arm, so that the forceps lifting seat 100 can rotate relative to the head end 200 around the rotating shaft end to support the medical device passing through the instrument channel 330 and allow the medical device to extend from different angles.

[0051] See also Figure 7 , Figure 8 and Fig. 9, a first guide section 110 extending from the distal end toward the rotating shaft end may be provided on the front side of the lifting forceps seat 100. The front side of the lifting forceps seat 100 may be the side of the lifting forceps seat 100 that is in direct contact with the medical device when the lifting forceps seat 100 supports the medical device. Correspondingly, the lifting forceps seat 100 may have a back side opposite to the front side, and the back side of the lifting forceps seat 100 may be the side of the bottom shell of the lifting forceps seat 100 that is closer to the head end 200. The first guide section 110 may be configured to guide the medical device to a preset extension path or a preset retraction path. The first guide section 110 may be in the form of a curved surface with an arc-shaped cross-section, or in the form of a "V"-shaped groove formed by connecting two planes, or in any other form having a guiding function. Figure 7 Taking the first guide segment 110 shown as an example, the first guide segment 110 may include two first guide surfaces 111, and the two first guide surfaces 111 are connected by a first center groove 112. The specific structure of the first guide segment 110 will be described in detail later. The preset extension path refers to the path that the medical device moves when it is extended through the first guide segment 110, and the preset retraction path refers to the path that the medical device moves on the first guide segment 110 when the medical device is retracted. For different medical devices, the preset extension path or the preset retraction path may be different. For example, for an ultrasonic endoscope, the central axis of the preset extension path is preferably coplanar with the central axis of the ultrasonic probe; for an endoscope for duodenum, refer to Fig.12 The preset extension path may be an arc with a certain curvature.

[0052] See also Figure 7 , Figure 8 and Fig. 9 The first guide section 110 may have a connection end 113 away from the rotation shaft end, and the lifting clamp seat 100 may also be provided with a second guide section 120, which may extend obliquely from the connection end 113 toward the back of the lifting clamp seat 100 and away from the rotation shaft end. Similar to the first guide section 110, the second guide section 120 may be in any form with a guiding function, and the structure of the second guide section 120 will be described in detail later in conjunction with specific embodiments.

[0053] As mentioned above, the first specification instrument 910 is usually larger in size, and the first specification instrument 910 may have a step portion 911. The first specification instrument 910 with the step portion 911 may have a mushroom head-like structure. For a conventional lifting forceps seat, when the first specification instrument 910 with the step portion 911 is recycled, there will be an obvious sense of jamming when the step portion 911 contacts the distal end of the lifting forceps seat, which makes such a first specification instrument 910 have an obvious sense of jamming during the recycling process. The lifting forceps seat 100 provided in the present application takes the first specification instrument 910 as an electrosurgical excision drainage stent as an example to illustrate the recycling process of the first specification instrument 910, please refer to the detailed description. Fig.14 . The XX direction shown in the figure can be understood as the recovery direction of the first specification instrument 910, that is, the recovery path of the first specification instrument 910 is in the XX direction. Since the component forces of the support force of the lifting forceps seat 100 on the first specification instrument 910 in the YY direction shown in the figure can offset each other, the support force of the lifting forceps seat 100 on the first specification instrument 910 can be considered to be on the plane where the XX direction and the ZZ direction are located. As shown in the figure, the force that causes the first specification instrument 910 to be recovered can be F1. Since the second guide section 120 extends obliquely from the connecting end 113 toward the back of the lifting forceps seat 100 and away from the rotating shaft end, during the recovery process of the first specification instrument 910, the step portion 911 first contacts the second guide section 120, and the second guide section 120 provides support for the step portion 911, and the support force is perpendicular to the contact surface between the second guide section 120 and the step portion 911. As shown in the figure, the support force can be F2. The support force F2 can be disassembled into a component force F21 in the XX direction opposite to the direction of F1, and a component force F22 in the ZZ direction perpendicular to the XX direction. The component force F21 of the support force F2 in the XX direction is much smaller than the force F1 that causes the first specification instrument 910 to be retracted. In addition, only the component force F22 in the ZZ direction acts on the first specification instrument 910. Therefore, the effect of the second guide section 120 supporting the step portion 911 is to make the first specification instrument 910 at least have a tendency to move away from the lifting clamp seat 100. In other words, the second guide section 120 can be configured to support the first specification instrument 910 with the step portion 911 located on the withdrawal path, so that the step portion 911 moves in a direction away from the lifting clamp seat 100. In this way, after the step portion 911 contacts the second guide section 120, no obvious sense of jamming will be generated. During the recovery process of the first specification instrument 910, the step portion 911 can smoothly move to the first guide section 110 after contacting the second guide section 120.

[0054] When the medical device passing through the instrument channel 330 of the forceps lifting seat 100 provided by the present invention is a first-specification instrument 910 with a step portion 911, the recovery process of the first-specification instrument 910 will not get stuck. The first-specification instrument 910 may refer to a medical device of a larger size. For example, when the first-specification instrument 910 is an electrosurgical excision and drainage stent, the second guide surface 121 supports and guides the mushroom head end of the electrosurgical excision and drainage stent, so that the mushroom head end will not get stuck during recovery; for example, when the first-specification instrument 910 is a biopsy forceps, the second guide surface 121 supports and guides the step surface of the biopsy forceps, so that the step surface will not get stuck during recovery. Therefore, such a forceps lifting seat 100 can significantly reduce the sense of jamming of the first-specification instrument 910 during the recovery process, thereby improving the user's clinical experience.

[0055] In an exemplary embodiment of the present invention, see Figure 8 and Fig. 9 The first guide section 110 may include two first guide surfaces 111, and the two first guide surfaces 111 may be symmetrically arranged about the length axis of the lifting forceps seat 100, and an angle of not less than 90° may be formed between the two first guide surfaces 111. The two first guide surfaces 111 may both be in the form of planes or in the form of curved surfaces. The two first guide surfaces 111 may be the same or different. In the illustrated embodiment, the two first guide surfaces 111 are two inclined planes. In an embodiment not shown, the two first guide surfaces 111 may be directly intersecting so that the first guide section 110 has a "V"-shaped cross-section. In such a lifting forceps seat 100, the angle between the two first guide surfaces 111 is not less than 90°, and it can adapt to medical devices of more sizes. Moreover, the setting of the two first guide surfaces 111 makes the overall structure simpler and easier to implement.

[0056] The two first guide surfaces 111 may not directly intersect, and the first guide section 110 includes a first central groove 112, which may be formed between the two first guide surfaces 111. The first central groove 112 may be a plane between the two first guide surfaces 111, or may be in the form of a flat-bottomed groove, or may be in any other form. The provision of the first central groove 112 may provide better support for the medical device in the first guide section 110.

[0057] Furthermore, the cross section of the first central groove 112 may be arc-shaped. Such a first central groove 112 may be adapted to medical devices with a smaller circular cross section to provide better support and guidance for such medical devices. Figure 5 and Figure 6The second specification instrument 920 may include a puncture needle sheath with a circular cross-section, and the cross-sectional diameter of the puncture needle sheath is usually small. The first central groove 112 in the form of an arc cross-section can provide better support and guidance for the second specification instrument 920.

[0058] The second guide section 120 may include two second guide surfaces 121, and the two second guide surfaces 121 may be symmetrically arranged about the length axis of the lifting clamp seat 100. Figure 7 , the two second guide surfaces 121 may be curved surfaces. Figure 8 and Fig. 9 The two second guide surfaces 121 may also be planes. The arrangement of the two second guide surfaces 121 makes the overall structure simpler and easier to process.

[0059] The two second guide surfaces 121 may intersect directly, and in this case, the second guide section 120 may have a "V"-shaped cross section. The two second guide surfaces 121 may not intersect directly, and a third guide section 130 may be provided between the two second guide surfaces 121. The third guide section 130 will be described in detail below in conjunction with the accompanying drawings.

[0060] In one embodiment of the present invention, see Figure 7 The lifting forceps seat 100 is also provided with a third guide section 130, which extends obliquely from the connection end 113 toward the back of the lifting forceps seat 100 and away from the rotating shaft end, and is located in the middle area of ​​the second guide section 120. The third guide section 130 is configured to guide the second specification instrument 920 to a preset extension path. The second guide section 120 can guide the second specification instrument 920 to move from both sides of the lifting forceps seat 100 to the middle area of ​​the second guide section 120 and then enter the third guide section 130. The preset extension path refers to the path that the second specification instrument 920 moves when it is extended through the third guide section 130. The second specification instrument 920 is usually smaller in size. For example, the second specification instrument 920 can be a puncture needle sheath. When the lifting clamp seat 100 is in the down position, since the third guide section 130 extends obliquely from the connection end 113 toward the back of the lifting clamp seat 100 and away from the rotating shaft end, the second specification instrument 920 may not contact the third guide section 130. For example, during the recovery process of the second specification instrument 920, the lifting clamp seat 100 is in the down position, and the second specification instrument 920 is recovered along the preset withdrawal path under the guidance of the first guide section 110. When the second specification instrument 920 is extended, the distal end of the lifting clamp seat 100 is lifted. For details, see Figure 6Since the second-standard instrument 920 can have a certain rigidity, the second-standard instrument 920 will be more likely to contact the distal end of the lifting forceps seat 100, that is, the third guide section 130, and extend along the preset extension path under the guidance of the third guide section 130. The third guide section 130 can make the lifting forceps seat 100 better support and guide the second-standard instrument 920 when the medical instrument passing through the instrument channel 330 is the second-standard instrument 920. Figure 5 and Figure 6 When the third guide segment 130 supports the second specification instrument 920, since the second specification instrument 920 may refer to a smaller medical device, and the third guide segment 130 is formed between the two second guide surfaces 121, the size of the third guide segment 130 is also smaller, so it can provide better support for the second specification instrument 920. The second specification instrument 920 is often in an extended state during use, and the third guide segment 130 can prevent the second specification instrument 920 from shaking during use.

[0061] See also Fig. 9 The second guide section 120 may include two second guide surfaces 121, and the third guide section 130 may be formed between the two second guide surfaces 121. The included angle γ between the second guide surface 121 and the side wall of the third guide section 130 may be not less than 135°. The included angle between the second guide surface 121 and the side wall of the third guide section 130 forms an obtuse angle, which is beneficial to the guidance of large-sized instruments such as the first-specification instrument 910 when it is recovered.

[0062] The third guide section 130 may include two third guide surfaces 131, and the two third guide surfaces 131 may be symmetrically arranged about the length axis of the lifting clamp seat 100, and an angle of not less than 90° may be formed between the two third guide surfaces 131. The third guide section 130 has two third guide surfaces 131, and the second specification instrument 920 supported by the two third guide surfaces 131 always tends to remain in the middle area of ​​the third guide surfaces 131 when being retracted or extended. In other words, if the second specification instrument 920 deviates from the length axis direction of the lifting clamp seat 100 during use, after the external force is removed, the second specification instrument 920 will move toward the length axis direction of the lifting clamp seat 100 under the guidance of the third guide surfaces 131. For example, when the second specification instrument 920 is in use, it deviates from the length axis of the lifting forceps seat 100 and is closer to the left or right side of the lifting forceps seat 100. In this way, after the external force is removed, the second specification instrument 920 will move in the direction of the length axis of the lifting forceps seat 100 under the guidance of the third guide surface 131, that is, move to the middle area of ​​the third guide surface 131. In the illustrated embodiment, the third guide surface 131 is in the form of two symmetrical surfaces, and the middle area of ​​the third guide surface 131 refers to the area between the two symmetrical surfaces. The two third guide surfaces 131 can both be in the form of planes or in the form of curved surfaces. The two third guide surfaces 131 can be the same or different. In the illustrated embodiment, the two third guide surfaces 131 are two inclined planes. In an embodiment not shown, the two third guide surfaces 131 can be directly intersecting, and the third guide section 130 has a "V"-shaped cross-section. Such a forceps lifting seat 100, in which the angle between the two third guide surfaces 131 is not less than 90°, can be adapted to medical devices of more sizes. Moreover, the provision of the two third guide surfaces 131 makes the overall structure simpler and easier to implement.

[0063] See also Figure 8 and Fig. 9, the first guide section 110 may include two first guide surfaces 111, and the two first guide surfaces 111 may be symmetrically arranged about the length axis of the lifting forceps seat 100, and the third guide section 130 may include two third guide surfaces 131. The angle between the two first guide surfaces 111 may be smaller than the angle between the two third guide surfaces 131. If the angle between the two third guide surfaces 131 is smaller than the angle between the two first guide surfaces 111, the second specification instrument 920 extending from the first guide section 110 may be larger in size than the angle between the two third guide surfaces 131, and the second specification instrument 920 will not be able to enter the third guide section 130. Therefore, the angle between the two first guide surfaces 111 is smaller than the angle between the two third guide surfaces 131, which can ensure that the second specification instrument 920 that continues to move toward the distal end on the first guide section 110 can smoothly enter the third guide section 130 from the first guide section 110, and will not be stuck at the junction of the first guide section 110 and the third guide section 130 due to the change of the boundary size.

[0064] The third guide section 130 may be provided with a third central groove 132, which may be formed between the two third guide surfaces 131. The third central groove 132 may be a plane between the two third guide surfaces 131, or may be in the form of a flat-bottomed groove, or may be in any other form. The third central groove 132 may provide better support for the second specification instrument 920 in the middle area of ​​the third guide section 130.

[0065] Furthermore, the cross section of the third central groove 132 may be in the shape of an arc. Such a third central groove 132 may be adapted to medical devices with a smaller circular cross section, so as to provide better support and guidance for such medical devices.

[0066] The arc-shaped third center groove 132 may have an arc diameter, and the arc diameter may be no greater than 19G. G represents the outer diameter unit of the puncture needle sheath, and the values ​​of G corresponding to different puncture needle sheaths converted into the international system of units may be different. Fig.11, the small circle in the figure represents the smallest cross-section of the puncture needle sheath on the market, and the large circle in the figure represents the largest cross-section of the puncture needle sheath on the market. At present, the largest diameter of the puncture needle sheath on the market is 19G, and the smallest diameter of the puncture needle sheath on the market is 25G. As shown in the figure, when the puncture needle sheath with a diameter range of 19G to 25G passes through the instrument channel 330 and reaches the lifting forceps seat 100, it will be located in the third guide section 130 and supported by the third guide surface 131. In the illustrated embodiment, the puncture needle sheath located in the third guide section 130 will have two support points, and the two support points are respectively located on the two third guide surfaces 131. Among them, the smaller the diameter of the puncture needle sheath, the lower the height of the two support points, and the larger the diameter of the puncture needle sheath, the higher the height of the two support points. In this way, the two support points can provide good support for the puncture needle sheath, avoiding the shaking of the puncture needle sheath during use. Furthermore, when such a lifting forceps seat 100 supports the largest size of puncture needle sheath on the market, that is, when supporting a puncture needle sheath with a diameter of 19G, the supporting point is exactly located at the intersection of the second guide surface 121 and the third guide surface 131. Here, 19G to 25G can be a value between 1.1mm and 0.5mm. Such a lifting forceps seat 100 can be adapted to various types of puncture needle sheaths, and the overall device has a wider range of applications.

[0067] See also Figure 6 , taking the second specification instrument 920 as an example of a puncture needle sheath. When the puncture needle sheath extends to the outside of the head end 200, it is actually the distal end of the lifting forceps seat 100 and the top of the instrument channel 330 that provide support and limitation for the puncture needle sheath. When a third guide section 130 is provided at the distal end of the lifting forceps seat 100, and a third center groove 132 is further provided on the third guide section 130, it is the third center groove 132 and the top of the instrument channel 330 that provide support and limitation for the extended puncture needle sheath. Since the third center groove 132 can be similarly understood as being formed by digging out a part at the distal end of the lifting forceps seat 100, the height of the supporting part is reduced, and therefore the height of the distal end of the puncture needle sheath will decrease at this time, that is, the distal end of the puncture needle sheath can be closer to the distal end of the head end 200, that is, the distal end of the puncture needle sheath can be closer to the probe position. Combined with reference to Figure 5 The optical collection area of ​​the lighting window 210 and the camera 220 is limited, and the second specification instrument 920 that is closer to the probe position can reduce the blind spot of the field of view during operation and enhance the effect of auxiliary treatment or diagnosis and treatment.

[0068] Further, see Fig. 9 and Fig.10, the angle α between the central axis of the first central groove 112 (LL line in the figure) and the central axis of the third central groove 132 (MM line in the figure) is between 10° and 45°. When the angle α is too large, the distal end of the extended second specification instrument 920 is too close to the probe position, which may affect the probe detection or damage the probe; when the angle α is too small, the effect of reducing the blind area of ​​the visual field during operation is not obvious. After repeated tests and debugging, it is shown that it is more appropriate to set the angle α to 10° to 45°. Such a design not only makes the distal end of the medical device in the optical collection area of ​​the lighting window 210 and the camera 220, reducing the blind area of ​​the visual field when operating the medical device, but also avoids the interference or even damage of the distal end of the medical device to the probe.

[0069] See also Fig.10 There may be an angle β between the second guide surface 121 and the first guide surface 111, and the angle β may be between 30° and 60°. For example, the angle β may be 30°, 40°, 42°, 50°, 53°, 55° or 60°. If the angle β is less than 30°, the second guide section 120 is tilted from the connection end 113 toward the back of the lifting clamp seat 100 to a small extent, which can be understood as the distal end of the lifting clamp seat 100 still has a certain thickness. At this time, the second guide section 120 cannot quickly form support for the step portion 911, so there will still be an obvious sense of jamming when the first specification instrument 910 is recovered; and if the angle β is greater than 60°, the second guide section 120 is tilted from the connection end 113 toward the back of the lifting clamp seat 100 to a large extent, which can be understood as the second guide section 120 forms the distal end of the lifting clamp seat 100, and when the first specification instrument 910 is recovered, the step portion 911 will produce obvious jamming at the second guide section 120, and the component force F21 of the second guide section 120 supporting the first specification instrument 910 in the XX direction will be too large, resulting in difficulty in recovering the first specification instrument 910.

[0070] See also Figure 8 , Fig. 9 and Fig.10The third guide segment 130 may have a tangent point P that is tangent to the second specification device 920 with a predetermined diameter, and the first guide segment 110 and the second guide segment 120 may intersect at the tangent point P. In the illustrated embodiment, the third guide segment 130 supports the second specification device 920 with the largest size on the market. For example, when the third guide segment 130 supports the puncture needle sheath with the largest size on the market, the cross section of the puncture needle sheath has a tangent point with the third guide segment 130, that is, the puncture needle sheath can just rest on the third guide segment 130. At the same time, the tangent point P is also the intersection point of the first guide segment 110 and the second guide segment 120, or in other words, the tangent point P is also the dividing point between the first guide segment 110 and the second guide segment 120, and the connecting end 113 of the first guide segment 110 also passes through the tangent point P. When such a lifting forceps seat 100 is produced, the tangent point P can be determined by the puncture needle sheath with the largest diameter on the market. After further determining the angle γ between the second guide surface 121 and the side wall of the third guide section 130, the structure of the second guide surface 121 is actually determined.

[0071] See also Fig.13 The second guide section 120 may include a multi-level guide surface. For example, in the illustrated embodiment, the second guide section 120 may include a first-level guide surface 1211 and a second-level guide surface 1212. When the first-specification instrument 910 is withdrawn on the withdrawal path, the multi-level guide surfaces may contact the step portion 911 in turn and support the step portion 911 in turn, so that the first-specification instrument 910 will not get stuck when withdrawing on the withdrawal path, and the withdrawal process is smoother.

[0072] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by directional words such as "front", "back", "up", "down", "left", "right", "lateral", "vertical", "vertical", "horizontal", "top", "bottom", etc. is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention; the directional words "inside" and "outside" refer to the inside and outside relative to the contour of each component itself.

[0073] For ease of description, regional relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the regional positional relationship between one or more components or features shown in the figure and other components or features. It should be understood that regional relative terms include not only the orientation of the components as described in the figure, but also different orientations in use or operation. For example, if the components in the accompanying drawings are inverted as a whole, the components "above other components or features" or "above other components or features" will include the situation where the components are "below other components or structures" or "below other components or structures". Therefore, the exemplary term "above" may include both "above" and "below". In addition, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this article is intended to include all of these situations.

[0074] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, parts, components and / or combinations thereof.

[0075] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0076] The present invention has been described by the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the present invention to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the present invention is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications all fall within the scope of the protection claimed by the present invention. The protection scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A lifting clamp seat, comprising a rotating shaft end and a distal end, characterized in that: A first guide section is provided on the front surface of the lifting clamp seat, extending from the distal end toward the rotating shaft end, the first guide section having a connection end away from the rotating shaft end, and the first guide section is configured to guide the medical instrument to a preset extension path or a preset retraction path; The lifting clamp seat is further provided with a second guide section, which extends obliquely from the connecting end toward the back of the lifting clamp seat and away from the rotating shaft end; The second guide section is configured to support a first specification instrument having a step portion located on the retraction path, so that the step portion moves in a direction away from the lifting clamp seat.

2. The lifting clamp seat according to claim 1, characterized in that: The first guide section includes two first guide surfaces, the two first guide surfaces are symmetrically arranged about the length axis of the lifting clamp seat, and an angle of not less than 90° is formed between the two first guide surfaces.

3. The lifting clamp seat according to claim 2, characterized in that: The first guide section includes a first central groove formed between the two first guide surfaces.

4. The lifting clamp seat according to claim 3, characterized in that: The cross section of the first central groove is arc-shaped.

5. The lifting clamp seat according to claim 2, characterized in that: The second guide section includes two second guide surfaces, and the two second guide surfaces are symmetrically arranged about the length axis of the lifting clamp seat.

6. The lifting clamp seat according to claim 5, characterized in that: An included angle between the second guide surface and the first guide surface is between 30° and 60°.

7. The lifting clamp seat according to claim 1, characterized in that: A third guide section is also provided on the lifting clamp seat, and the third guide section extends obliquely from the connecting end toward the back side of the lifting clamp seat and away from the rotating shaft end. The third guide section is located in the middle area of ​​the second guide section, and the third guide section is configured to guide the second specification instrument to a preset extension path.

8. The lifting clamp seat according to claim 7, characterized in that: The second guide section includes two second guide surfaces, and the third guide section is formed between the two second guide surfaces.

9. The lifting clamp seat according to claim 8, characterized in that: An included angle between the second guide surface and the side wall of the third guide section is not less than 135°.

10. The lifting clamp seat according to claim 7, characterized in that: The third guide section includes two third guide surfaces, and the two third guide surfaces are symmetrically arranged about the length axis of the lifting clamp seat, and an angle of not less than 90° is formed between the two third guide surfaces.

11. The lifting clamp seat according to claim 10, characterized in that: The first guide section includes two first guide surfaces, and the two first guide surfaces are symmetrically arranged about the length axis of the lifting clamp seat. The angle between the two first guide surfaces is smaller than the angle between the two third guide surfaces.

12. The lifting clamp seat according to claim 10, characterized in that: The third guide section is provided with a third central groove, and the third central groove is formed between the two third guide surfaces.

13. The lifting clamp seat according to claim 12, characterized in that: The first guide section includes a first center groove and two first guide surfaces. The two first guide surfaces are symmetrically arranged about the length axis of the lifting clamp seat. The first center groove is formed between the two first guide surfaces. The angle between the center axis of the first center groove and the center axis of the third center groove is between 10° and 45°.

14. The lifting clamp seat according to claim 12, characterized in that: The cross section of the third central groove is arc-shaped.

15. The lifting clamp seat according to claim 14, characterized in that: The third central groove has an arc diameter, and the arc diameter is no greater than 19G.

16. The lifting clamp seat according to claim 7, characterized in that: The third guide segment has a tangent point that is tangent to the second-specification instrument with a predetermined diameter, and the first guide segment and the second guide segment intersect at the tangent point.

17. The clamp lifting seat according to any one of claims 1 to 16, characterized in that: The second guide section includes a multi-stage guide surface. When the first specification instrument retreats along the retreat path, the multi-stage guide surface contacts the step portion in sequence.

18. An endoscope, characterized in that: The endoscope comprises a head end portion, on which a forceps lifting seat as claimed in any one of claims 1 to 17 is provided.

19. The endoscope according to claim 18, wherein The head end portion includes an ultrasonic probe, and a central axis of the ultrasonic probe is coplanar with a center line of the extension path.

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