CN221205377U - Clamp lifting seat and endoscope - Google Patents

Abstract

The utility model provides a forceps lifting seat and an endoscope. The lifting clamp seat comprises a rotating shaft end and a distal end, a first guide section extending from the distal end towards the rotating shaft end is arranged on the front surface of the lifting clamp seat, the first guide section is provided with a connecting end far away from the rotating shaft end, and the first guide section is configured to guide a medical instrument to a preset extending path or a preset retracting path; the second guide section is also arranged on the lifting clamp seat, and extends obliquely from the connecting end towards the back surface of the lifting clamp seat and away from the rotating shaft end; wherein the second guide section is configured to support a first gauge instrument having a stepped portion located on the retraction path such that the stepped portion moves in a direction away from the lift clamp seat. According to the forceps lifting seat provided by the utility model, when the medical instrument passing through the instrument channel is a first-specification instrument with larger size, the first-specification instrument cannot be blocked in the recovery process.

Description

Clamp lifting seat and endoscope

Technical Field

The utility model relates to the technical field of medical treatment, in particular to a forceps lifting seat and an endoscope.

Background

The endoscopic imaging is used as a noninvasive imaging method, can effectively prolong the human sight, is widely applied to image diagnosis and image-guided treatment in various fields such as digestive tracts, cardiovascular and cerebrovascular systems, urinary systems, respiratory systems and the like, and greatly promotes the examination precision of diseases.

The portion of the endoscope that enters the body is an elongated insertion portion, typically having an instrument channel disposed therein, through which a medical instrument can be passed to the distal end of the endoscope to aid in diagnosis or treatment when the endoscope is used for diagnosis or treatment. Most of the existing endoscopes are provided with a forceps holder for adjusting the direction of the medical instrument extending out of the instrument channel.

However, in the use of the existing forceps lifting seat, very obvious clamping is easy to generate in the retracting process of medical instruments with larger sizes such as an electrotome drainage bracket, a biopsy forceps and the like, and the user experience is poor.

Disclosure of utility model

In order to at least partially solve the problems of the prior art, according to one aspect of the present utility model, a lifting jaw seat is provided. The lifting clamp seat comprises a rotating shaft end and a distal end, a first guide section extending from the distal end towards the rotating shaft end is arranged on the front surface of the lifting clamp seat, the first guide section is provided with a connecting end far away from the rotating shaft end, and the first guide section is configured to guide a medical instrument to a preset extending path or a preset retracting path; the second guide section is also arranged on the lifting clamp seat, and extends obliquely from the connecting end towards the back surface of the lifting clamp seat and away from the rotating shaft end; wherein the second guide section is configured to support a first gauge instrument having a stepped portion located on the retraction path such that the stepped portion moves in a direction away from the lift clamp seat.

According to the forceps lifting seat provided by the utility model, when the medical instrument passing through the instrument channel is the first-specification instrument, the first-specification instrument cannot be blocked in the recovery process. The first specification instrument can refer to a medical instrument with a larger size, for example, when the first specification instrument is an electrotome drainage bracket, the second guide surface has supporting and guiding functions on the mushroom head end of the electrotome drainage bracket, so that the mushroom head end cannot be blocked during recovery; for example, when the first gauge instrument is a biopsy forceps, the second guide surface has a supporting and guiding function on the step surface of the biopsy forceps, so that the step surface is not jammed during recovery. Therefore, the clamp lifting seat can remarkably weaken the clamping feeling of the first specification instrument in the recovery process, and the clinical experience of a user is improved.

The first guide section comprises two first guide surfaces which are arranged symmetrically with respect to the length axis of the lifting clamp seat, and an included angle of not less than 90 degrees is formed between the two first guide surfaces.

The first guide section comprises a first central groove formed between the two first guide surfaces.

Illustratively, the first central slot has a circular arc-shaped cross-section.

The second guide section comprises two second guide surfaces, which are arranged axisymmetrically with respect to the length axis of the lifting jaw.

Illustratively, the angle between the second guide surface and the first guide surface is between 30 ° and 60 °.

The second guide section is preferably configured to guide the second-gauge instrument onto a predetermined extension path.

The second guide section comprises two second guide surfaces, and the third guide section is formed between the two second guide surfaces.

Illustratively, the angle between the second guide surface and the side wall of the third guide section is not less than 135 °.

The third guide section comprises two third guide surfaces which are arranged symmetrically with respect to the length axis of the lifting clamp seat, and an included angle of not less than 90 degrees is formed between the two third guide surfaces.

The first guide section comprises two first guide surfaces which are arranged symmetrically with respect to the length axis of the lifting clamp base, and the included angle between the two first guide surfaces is smaller than the included angle between the two third guide surfaces.

The third guide section is provided with a third central groove, which is formed between the two third guide surfaces.

The first guide section comprises a first central 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 central groove is formed between the two first guide surfaces, and an included angle between the central axis of the first central groove and the central axis of the third central groove is 10-45 degrees.

Illustratively, the third central slot has a circular arc-shaped cross section.

Illustratively, the third central groove has a circular arc diameter, the circular arc diameter being no greater than 19G.

Illustratively, the third guide section has a tangent point thereon tangent to a second gauge instrument having a predetermined diameter size, the first guide section and the second guide section intersecting at the tangent point.

Illustratively, the second guide section includes a multi-stage guide surface that in turn contacts the step as the first gauge instrument is retracted on the retraction path.

According to another aspect of the present utility model there is provided an endoscope comprising a head end portion on which is provided a lifting jaw as any one of the above.

Illustratively, the head end includes an ultrasonic probe having a central axis coplanar with a central axis of the extension path.

In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

Advantages and features of the utility model are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings are included to provide an understanding of the utility model and are incorporated in and constitute a part of this specification. Embodiments of the present utility model and their description are shown in the drawings to explain the principles of the utility model. In the drawings of which there are shown,

FIG. 1 is a schematic view of an endoscope according to an exemplary embodiment of the present utility model;

FIG. 2 is a perspective view of a head end according to an exemplary embodiment of the present utility model;

FIG. 3 is a perspective view of a head end portion with a first gauge instrument threaded through an instrument passageway in accordance with one exemplary embodiment of the present utility model;

FIG. 4 is a partial cross-sectional view of the head end shown in FIG. 3;

FIG. 5 is a perspective view of a head end portion with a second gauge instrument inserted through an instrument pathway in accordance with one exemplary embodiment of the utility model;

FIG. 6 is a partial cross-sectional view of the head end shown in FIG. 5;

FIG. 7 is a perspective view of a lifting clamp seat according to an exemplary embodiment of the present utility model;

FIG. 8 is a perspective view of a lifting clamp base according to an exemplary embodiment of the present utility model;

FIG. 9 is a perspective view of the lifting clamp seat shown in FIG. 8 in another orientation;

FIG. 10 is a cross-sectional view of the lifting clamp block shown in FIG. 8;

FIG. 11 is an enlarged partial view of a cross-section of a lifting jaw seat according to an exemplary embodiment of the utility model, wherein the dashed small circle represents the cross-section of a second gauge instrument of a minimum size and the dashed large circle represents the cross-section of a second gauge instrument of a maximum size;

FIG. 12 is a perspective view of a lifting clamp seat according to an exemplary embodiment of the present utility model;

FIG. 13 is a perspective view of a lifting clamp seat according to an exemplary embodiment of the present utility model;

Fig. 14 is a perspective view of a lifting jaw housing supporting a first gauge instrument in accordance with an exemplary embodiment of the present utility model.

Wherein the above figures include the following reference numerals:

100. Lifting a clamp seat; 110. a first guide section; 111. a first guide surface; 112. a first central slot; 113. a connection end; 120. a second guide section; 121. a second guide surface; 1211. a first stage guide surface; 1212. a second stage guide surface; 130. a third guide section; 131. a third guide surface; 132. a third central slot; 200. a head end portion; 210. an illumination window; 220. a camera; 300. an insertion section; 330. an instrument channel; 400. an operation unit; 500. a light guide hose; 600. a light guide section; 700. a cable; 800. an ultrasonic connector; 910. a first gauge instrument; 911. a step portion; 920. a second gauge instrument.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the utility model. However, it will be understood by those skilled in the art that the following description illustrates preferred embodiments of the utility model by way of example only and that the utility model may be practiced without one or more of these details. Furthermore, some technical features that are known in the art have not been described in detail in order to avoid obscuring the utility model.

According to one aspect of the present utility model, a lifting jaw seat is provided. The lifting jaw mount may be applied to any suitable device including, but not limited to, an endoscope. Thus, according to another aspect of the present utility model, there is also provided an endoscope. Specifically, referring to fig. 1, an endoscope provided by an embodiment of the present utility model includes an insertion portion 300, an operation portion 400, a light guide hose 500, a light guide portion 600, a cable wire 700, and an ultrasonic connector 800, which are sequentially connected.

The insertion portion 300 generally includes an instrument channel 330, and the instrument channel 330 extends to the operation portion 400 at one end and to the head end 200 described later at the other end. In this way, the medical device inserted through the device passage 330 is also positioned at the operation unit 400 at one end and extends out at the head end 200, so that the operator can operate the medical device at the operation unit 400 side and perform auxiliary diagnosis or treatment by using the end of the medical device extending out at the head end 200. The medical device may include a first gauge device 910 as shown in fig. 3 and 4, and a second gauge device 920 as shown in fig. 5 and 6, wherein the first gauge device 910 may be a larger size medical device, and the first gauge device 910 may be a medical device having a step 911, e.g., the first gauge device 910 may be an electrotomy drainage stent, and the second gauge device 920 may be a smaller size medical device, e.g., the second gauge device 920 may be a needle sheath, guidewire, etc.

The insertion portion 300 may further include a head end 200. Among these, components necessary for endoscopic imaging may be accommodated in the head end 200, for example, the illumination window 210, the camera 220, the ultrasound probe, and the like may be accommodated in the head end 200. Typically, the head end 200 is rigid.

The light guide 600 may 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 may be connected to the light source device and the endoscope host, respectively. The irradiation light generated by the light source device may be transmitted to the illumination window 210 of the head end 200 through the light guide medium penetrating through the light guide part 600, the light guide hose 500, the operation part 400, and the insertion part 300, and then emitted to irradiate the subject; after collecting the light returned from the subject, the camera 220 of the head end 200 generates an optical image signal of the subject, and transmits the optical image signal to the light guide 600, and the light guide 600 further transmits the optical image signal to the external endoscope host for image processing, thereby obtaining an optical image of the subject. For convenience of description, the present application is described by taking an ultrasonic endoscope as an example, but it is to be understood that the scheme provided by the present application is equally applicable to an endoscope without an ultrasonic detection function, for example, an endoscope for duodenum, or the like. For an ultrasonic endoscope, the light guide 600 may also be connected to the ultrasonic connector 800 by a cable wire 700. The ultrasonic connector 800 is provided so that the endoscope can 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, thereby obtaining an ultrasonic image of the object.

The head end 200 may be provided with a lifting jaw 100, and the lifting jaw 100 according to an embodiment of the present utility model will be described in detail with reference to the accompanying drawings. For convenience of description, the distal end referred to hereinafter refers to the end of the endoscope that is closer to the object under observation when the operator uses the endoscope; the proximal end referred to hereinafter refers to the end of the endoscope that is closer to the operator when the operator is using the endoscope.

The lifting clamp 100 may include a rotational shaft end and a distal end. The distal end of the lifting jaw 100 is proximal to the distal end of the head end 200 and the rotational shaft end of the lifting jaw 100 is proximal to the proximal end of the head end 200. The rotational shaft end of the lifting jaw 100 may be provided with a connection portion, which may be in the form of a swivel arm, so that the lifting jaw 100 may be rotated about the rotational shaft end with respect to the head end 200 to support the medical instrument passing through the instrument channel 330 and allow the medical instrument to protrude from different angles.

Referring to fig. 7, 8 and 9, the front surface of the lifting jaw 100 may be provided with a first guide segment 110 extending from the distal end towards the end of the rotation shaft. The front surface of the lifting clamp base 100 may be a surface of the lifting clamp base 100 that is in direct contact with the medical device when the lifting clamp base 100 supports the medical device, and accordingly, the lifting clamp base 100 may have a back surface opposite to the front surface, and the back surface of the lifting clamp base 100 may be a surface of the lifting clamp base 100 that is closer to the bottom shell of the head end 200. The first guide section 110 may be configured to guide the medical device onto a predetermined extension path or a predetermined retraction path. The first guiding section 110 may be curved, or may be a V-shaped groove formed by connecting two planes, or any other form with guiding function. Taking the first guide section 110 shown in fig. 7 as an example, the first guide section 110 may include two first guide surfaces 111, and the two first guide surfaces 111 are connected by a first central groove 112, and a specific structure of the first guide section 110 will be described in detail later. The predetermined extension path refers to a path along which the medical instrument moves while extending through the first guide section 110, and the predetermined retraction path refers to a path along which the medical instrument moves on the first guide section 110 while retrieving the medical instrument. The preset extension path or the preset retraction path may be different for different medical instruments, for example for an ultrasound endoscope, the central axis of the preset extension path is preferably coplanar with the central axis of the ultrasound probe; for a duodenal endoscope, referring to fig. 12, the predetermined extension path may be an arc having a certain curvature.

Referring to fig. 7, 8 and 9, the first guide section 110 may have a connection end 113 remote from the end of the rotation shaft, and the lifting clamp 100 may further be provided with a second guide section 120, and the second guide section 120 may extend obliquely from the connection end 113 toward the rear surface of the lifting clamp 100 and away from the end of the rotation shaft. Similar to the first guide section 110, the second guide section 120 may be of any form having a guide function, and the structure of the second guide section 120 will be described in detail with reference to the specific embodiment.

As mentioned above, the first gauge instrument 910 is generally larger in size, the first gauge instrument 910 may have a stepped portion 911, and the first gauge instrument 910 having the stepped portion 911 may have a mushroom head-like structure. For the conventional lifting clamp seat, when the first specification instrument 910 with the step portion 911 is recovered, the step portion 911 is in contact with the distal end of the lifting clamp seat, and thus the first specification instrument 910 has obvious clamping feeling in the recovery process. In the lifting clamp base 100 provided by the application, the recovery process of the first specification instrument 910 is described by taking the first specification instrument 910 as an electrotomy drainage bracket as an example, and referring to fig. 14 specifically. The illustrated X-X direction may be understood as the direction of retraction of the first gauge instrument 910, i.e., the retraction path of the first gauge instrument 910 is in the X-X direction. Since the component forces of the supporting force of the lifting clamp base 100 on the first specification instrument 910 in the Y-Y direction shown in the drawing can cancel each other, the supporting force of the lifting clamp base 100 on the first specification instrument 910 can be considered to be on the plane where the X-X direction and the Z-Z direction are located. The force to retract the first gauge instrument 910 as shown may be F1. Since the second guide section 120 extends obliquely from the connection end 113 toward the back of the lifting clamp base 100 and away from the end of the rotation shaft, the step portion 911 first contacts the second guide section 120 during the recovery process of the first specification device 910, and the second guide section 120 provides support for the step portion 911, the supporting force is perpendicular to the contact surface of the second guide section 120 and the step portion 911, and as shown in the figure, the supporting force may be F2. The supporting force F2 can be disassembled into a component force F21 in the X-X direction opposite to the F1 direction, and a component force F22 in the Z-Z direction perpendicular to the X-X direction. The component force F21 of the supporting force F2 in the X-X direction is much smaller than the force F1 for recovering the first gauge instrument 910, and only the component force F22 in the Z-Z direction acts on the first gauge instrument 910, so the supporting of the stepped portion 911 by the second guide section 120 exhibits an effect that the first gauge instrument 910 has at least a tendency to move away from the lifting jaw 100. That is, the second guide section 120 may be configured to support the first gauge instrument 910 having the step portion 911 located on the retracting path such that the step portion 911 moves in a direction away from the lifting jaw 100, such that no significant click feeling is generated after the step portion 911 contacts the second guide section 120, and the step portion 911 may smoothly move onto the first guide section 110 from contacting the second guide section 120 during the recovery of the first gauge instrument 910.

In the lifting clamp base 100 provided by the utility model, when a medical instrument passing through the instrument channel 330 is a first-specification instrument 910 with a step part 911, the recovery process of the first-specification instrument 910 can not be blocked. The first specification device 910 may refer to a medical device with a larger size, for example, when the first specification device 910 is an electrotomy drainage bracket, the second guide surface 121 has supporting and guiding effects on the mushroom head end of the electrotomy drainage bracket, so that the mushroom head end cannot be blocked during recovery; for example, when the first gauge 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 does not get stuck during retrieval. Therefore, such a lifting clamp base 100 can significantly weaken the click feel of the first specification instrument 910 during the recovery process, and promote the clinical experience of the user.

In an exemplary embodiment of the present utility model, referring to fig. 8 and 9, the first guide section 110 may include two first guide surfaces 111, the two first guide surfaces 111 may be axisymmetrically disposed with respect to the length axis of the lifting clamp base 100, and an included angle of not less than 90 ° may be formed between the two first guide surfaces 111. The two first guide surfaces 111 may each be in the form of a plane or may each be in the form of a curved surface. The two first guide surfaces 111 may be identical or different. In the illustrated embodiment, the two first guide surfaces 111 are two inclined planes. In an embodiment not shown, the two first guiding surfaces 111 may be directly intersecting such that the first guiding section 110 has a "V" shaped cross section. In such a lifting clamp base 100, the included angle between the two first guide surfaces 111 is not smaller than 90 °, so that the lifting clamp base can be adapted to medical instruments with more sizes, and the two first guide surfaces 111 are arranged, so that the whole structure is simpler and easy to realize.

The two first guide surfaces 111 may not directly intersect, and the first guide section 110 includes a first central groove 112, and the first central groove 112 may be formed between the two first guide surfaces 111. The first central groove 112 may be a plane between the two first guiding surfaces 111, may be in the form of a flat bottom groove, or may be in any other form. The provision of the first central slot 112 may provide better support for the medical instrument at the first guide section 110.

Further, the first central groove 112 may have a circular arc shape in cross section. Such a first central slot 112 may be adapted to a medical instrument having a circular cross-section of smaller dimensions to provide better support and guiding for such a medical instrument. For example, referring to fig. 5 and 6, the second gauge instrument 920 may include a needle sheath having a circular cross-section, and the cross-sectional diameter of the needle sheath is generally smaller, and the first central slot 112 in the form of a circular arc cross-section may provide better support and guidance for the second gauge instrument 920.

The second guide section 120 may include two second guide surfaces 121, and the two second guide surfaces 121 may be axisymmetrically disposed with respect to the length of the lifting jaw 100. Referring to fig. 7, the two second guide surfaces 121 may be curved surfaces. Referring to fig. 8 and 9, the two second guide surfaces 121 may also be planar. The arrangement of the two second guide surfaces 121 is simpler in overall structure and easy to process.

The two second guide surfaces 121 may be directly intersected, in which case the second guide section 120 may have a "V" shaped cross section. The two second guide surfaces 121 may also be non-intersecting, 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 with reference to the accompanying drawings.

In one embodiment of the present utility model, referring to fig. 7, the lifting jaw 100 is further provided with a third guide section 130, the third guide section 130 extends from the connection end 113 toward the rear surface of the lifting jaw 100 and is inclined away from the rotation shaft end, the third guide section 130 is located at a middle region of the second guide section 120, and the third guide section 130 is configured to guide the second gauge instrument 920 onto a preset extension path. The second guide section 120 may guide the second gauge instrument 920 from both sides of the lifting jaw 100 toward a middle region of the second guide section 120 and into the third guide section 130. The predetermined extension path refers to the path that the second gauge instrument 920 moves as it extends through the third guide section 130, the second gauge instrument 920 typically being smaller in size, e.g., the second gauge instrument 920 may be a needle sheath. When the lifting clamp base 100 is in the laying state, the second specification device 920 may not contact the third guide section 130 because the third guide section 130 extends obliquely from the connection end 113 toward the back surface of the lifting clamp base 100 and away from the rotation shaft end, for example, during the recovery process of the second specification device 920, the lifting clamp base 100 is in the laying state, and the second specification device 920 is recovered by a preset recovery path under the guidance of the first guide section 110. When the second gauge instrument 920 is extended, the distal end of the lifting jaw 100 is lifted, referring to fig. 6, since the second gauge instrument 920 may have a certain rigidity, more of the second gauge instrument 920 may contact the distal end of the lifting jaw 100, that is, contact the third guide section 130, and extend from a predetermined extension path guided by the third guide section 130. The third guiding section 130 may enable the lifting clamp 100 to support and guide the second specification instrument 920 better when the medical instrument passing through the instrument channel 330 is the second specification instrument 920. Referring to fig. 5 and 6, when the third guide section 130 supports the second gauge device 920, since the second gauge device 920 may refer to a smaller size medical device and the third guide section 130 is formed between the two second guide surfaces 121, the third guide section 130 may also have a smaller size, so that the third guide section 130 may better support the second gauge device 920, and the second gauge device 920 may be in an extended state in use, and the third guide section 130 may avoid shaking of the second gauge device 920 during use.

Referring to 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. Wherein the 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 angle between the second guide surface 121 and the side wall of the third guide section 130 forms an obtuse angle, facilitating guiding of large-sized instruments, such as the first gauge instrument 910, when retrieved.

The third guide section 130 may include two third guide surfaces 131, the two third guide surfaces 131 may be axisymmetrically disposed about the length of the lifting jaw 100, and an included 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 gauge instrument 920 supported by the two third guide surfaces 131 always tends to remain located in the middle region of the third guide surfaces 131 when retracted or extended. That is, if the second gauge device 920 is deviated from the longitudinal direction of the lifting jaw 100 in use, the second gauge device 920 moves in the longitudinal direction of the lifting jaw 100 under the guide of the third guide surface 131 after the external force is removed. For example, the second gauge device 920 is offset from the length axis of the lifting jaw 100 and is closer to the left or right of the lifting jaw 100 in use, so that after the external force is removed, the second gauge device 920 moves in the length axis direction of the lifting jaw 100, that is, toward the middle region of the third guide surface 131 under the guidance of the third guide surface 131. In the illustrated embodiment, the third guide surface 131 is in the form of two symmetrical surfaces, where the middle region of the third guide surface 131 refers to the region between the two symmetrical surfaces. The two third guide surfaces 131 may each be in the form of a plane or may each be in the form of a curved surface. The two third guide surfaces 131 may be identical or different. In the illustrated embodiment, the two third guide surfaces 131 are two inclined planes. In an embodiment not shown, the two third guiding surfaces 131 may be directly intersecting, in which case the third guiding section 130 has a "V" shaped cross-section. The included angle between the two third guiding surfaces 131 of the lifting clamp seat 100 is not smaller than 90 degrees, so that the lifting clamp seat can be suitable for medical instruments with more sizes, and the two third guiding surfaces 131 are arranged, so that the lifting clamp seat is simpler in overall structure and easy to realize.

Referring to fig. 8 and 9, the first guide section 110 may include two first guide surfaces 111, the two first guide surfaces 111 may be axisymmetrically disposed with respect to the length of the lifting jaw 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 guiding surfaces 131 is smaller than the angle between the two first guiding surfaces 111, the second gauge instrument 920 protruding from the first guiding section 110 may be larger in size than the angle between the two third guiding surfaces 131, and the second gauge instrument 920 will not be able to enter the third guiding section 130. Therefore, the included angle between the two first guiding surfaces 111 is smaller than the included angle between the two third guiding surfaces 131, so that the second specification device 920 moving distally on the first guiding section 110 can be ensured to smoothly enter the third guiding section 130 from the first guiding section 110 without being blocked at the boundary between the first guiding section 110 and the third guiding section 130 due to the change of the boundary dimension.

The third guide section 130 may be provided with a third central groove 132, and the third central groove 132 may be formed between the two third guide surfaces 131. The third central groove 132 may be a plane between the two third guiding surfaces 131, may be in the form of a flat bottom groove, or may be in any other form. The provision of the third central slot 132 may provide better support for the second gauge instrument 920 in the middle region of the third guide section 130.

Further, the third central groove 132 may have a circular arc shape in cross section. Such a third central slot 132 may be adapted to medical instruments having a circular cross-section of smaller dimensions to provide better support and guidance for such medical instruments.

The third central groove 132 having a circular arc-shaped cross section may have a circular arc diameter, and the circular arc diameter may be not greater than 19G. G represents the outer diameter unit of the puncture needle sheath, and the values obtained by converting G corresponding to different puncture needle sheaths into International units may be different. Referring to fig. 11, the small circles in the drawing represent the smallest size of the commercially available cross section of the needle sheath, and the large circles in the drawing represent the largest size of the commercially available cross section of the needle sheath. Currently, the largest size lancet sheath on the market is 19G in diameter and the smallest size lancet sheath on the market is 25G in diameter. As shown, the needle sheath having a diameter in the range of 19G to 25G is positioned within the third guide section 130 and supported by the third guide surface 131 as it passes through the instrument channel 330 to the lift clamp 100. In the illustrated embodiment, the needle sheath positioned within the third guide section 130 has two support points on the two third guide surfaces 131, respectively. Wherein, the smaller the diameter of the puncture needle sheath tube, the lower the heights of the two supporting points, the larger the diameter of the puncture needle sheath tube, and the higher the heights of the two supporting points. Thus, the two supporting points can provide good support for the puncture needle sheath tube, and the puncture needle sheath tube is prevented from shaking in the using process. Further, when such a forceps holder 100 supports a puncture needle sheath of a maximum size on the market, that is, when a puncture needle sheath having a diameter of 19G is supported, the support point is located at the junction between the second guide surface 121 and the third guide surface 131. 19G to 25G may be a value of 1.1mm to 0.5 mm. Such a lifting jaw 100 can be adapted to various types of spike sheath, and the overall device has a wider range of applications.

Referring to fig. 6, a second gauge instrument 920 is illustrated as a needle sheath. The distal end of the lift clamp block 100 and the top of the instrument channel 330 effectively provide support and restraint for the needle sheath as it extends outside of the head end 200. The distal end of the lift clamp 100 is provided with a third guide segment 130 and further, when a third central slot 132 is provided in the third guide segment 130, it is the third central slot 132 and the top of the instrument channel 330 that provide support and restraint for the extended needle sheath. Since the third central groove 132 can be similarly understood as being formed by cutting out a portion of the distal end of the forceps holder 100, the height of the supporting portion is reduced, and thus the height of the distal end of the puncture needle sheath is reduced 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. Referring to fig. 5 in combination, the illumination window 210 and the optical acquisition area of the camera 220 are limited, and the second specification instrument 920 located closer to the probe can reduce the blind area of the field of view during operation, so as to enhance the effect of auxiliary treatment or diagnosis.

Further, referring to fig. 9 and 10, the central axis of the first central groove 112 (line L-L is shown) is at an angle α of 10 ° to 45 ° to the central axis of the third central groove 132 (line M-M is shown). When the included angle α is too large, the distal end of the second gauge instrument 920 extending too close to the probe may affect the probe detection or damage the probe; when the included angle alpha is too small, the effect of reducing the visual field blind area in operation is not obvious, and repeated test and debugging show that the included angle alpha is quite proper at 10-45 degrees, so that the far end of the medical instrument is positioned in the optical acquisition area of the illumination window 210 and the camera 220, the visual field blind area in operation of the medical instrument is reduced, and the interference and even damage of the far end of the medical instrument to the probe are avoided.

Referring to fig. 10, an included angle β may exist between the second guide surface 121 and the first guide surface 111, and the included angle β may be 30 ° to 60 °, for example, the included angle β may be 30 °,40 °,42 °,50 °, 53 °, 55 °, or 60 °. If the included angle β is smaller than 30 °, the second guiding section 120 is inclined from the connecting end 113 toward the back of the lifting clamp seat 100 to a small extent, which can be understood that the distal end of the lifting clamp seat 100 still has a certain thickness, and the second guiding section 120 cannot quickly form a support for the step portion 911, so that there is still a distinct click feeling when the first specification instrument 910 is recovered; if the included angle β is greater than 60 °, the second guide section 120 is inclined from the connection end 113 toward the back of the lifting jaw 100 to a too large extent, which is understood that the second guide section 120 forms the distal end of the lifting jaw 100, and when the first specification instrument 910 is recovered, the step portion 911 may generate a significant clamping at the second guide section 120, and the component force F21 of the supporting force F2 of the second guide section 120 on the first specification instrument 910 in the X-X direction may be too large, which may make it difficult to recover the first specification instrument 910.

Referring to fig. 8, 9 and 10, the third guide section 130 may have a tangent point P tangent to the second gauge instrument 920 having a predetermined diameter size thereon, and the first guide section 110 and the second guide section 120 may intersect at the tangent point P. In the illustrated embodiment, the third guide section 130 supports thereon a second gauge instrument 920 having a maximum size in the market, for example, when the third guide section 130 supports thereon a puncture needle sheath having a maximum size in the market, the puncture needle sheath has a tangent point with the third guide section 130 in cross section, that is, when the puncture needle sheath is just capable of being placed against the third guide section 130. At the same time, the tangent point P is also the intersection point of the first guide section 110 and the second guide section 120, or the tangent point P is also the boundary point of the first guide section 110 and the second guide section 120, and the connecting end 113 of the first guide section 110 also passes through the tangent point P. In the production of such a lifting jaw 100, the point of tangency P can be determined from the puncture needle sheath of the largest diameter on the market, and the configuration of the second guide surface 121 is determined after further determining the angle γ between the second guide surface 121 and the side wall of the third guide section 130.

Referring to fig. 13, the second guide section 120 may include multiple stages of guide surfaces, for example, in the illustrated embodiment, the second guide section 120 may include a first stage of guide surface 1211 and a second stage of guide surface 1212, and when the first gauge instrument 910 is retracted on the retraction path, the multiple stages of guide surfaces may sequentially contact the stepped portion 911 and sequentially support the stepped portion 911 such that the first gauge instrument 910 is not jammed when retracted on the retraction path, and the retraction process is more smooth.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front", "rear", "upper", "lower", "left", "right", "transverse", "vertical", "horizontal", and "top", "bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely for convenience of describing the present utility model and simplifying the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, without limiting the scope of protection of the present utility model; the orientation terms "inner" and "outer" refer to the inner and outer relative to the outline of the components themselves.

For ease of description, regional relative terms, such as "over … …," "over … …," "on the upper surface of … …," "over," and the like, may be used herein to describe regional positional relationships of one or more components or features to other components or features shown in the figures. It will be understood that the relative terms of regions include not only the orientation of the components illustrated in the figures, but also different orientations in use or operation. For example, if the element in the figures is turned over entirely, elements "over" or "on" other elements or features would then be included in cases where the element is "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". Moreover, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and all such cases are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, components, assemblies, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.

The present utility model has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the utility model to the embodiments described. In addition, it will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that many variations and modifications are possible in light of the teachings of the utility model, which variations and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (19)

1. The utility model provides a lift pincers seat, includes rotation axle head and distal end, its characterized in that:

A first guide section extending from the distal end towards the rotating shaft end is arranged on the front surface of the lifting clamp seat, the first guide section is provided with a connecting end far away from the rotating shaft end, and the first guide section is configured to guide a medical instrument to a preset extending path or a preset retracting path;

The second guide section is arranged on the lifting clamp seat, extends from the connecting end towards the back surface of the lifting clamp seat and is away from the rotating shaft end in an inclined manner;

Wherein the second guide section is configured to support a first gauge instrument having a stepped portion located on the retraction path such that the stepped portion moves in a direction away from the lift jaw.

2. The lifting clamp base according to claim 1, wherein the first guiding section comprises two first guiding surfaces, the two first guiding surfaces are symmetrically arranged with respect to a length axis of the lifting clamp base, and an included angle of not less than 90 ° is formed between the two first guiding surfaces.

3. The lifting clamp of claim 2, wherein the first guide section includes a first central slot formed between the two first guide surfaces.

4. A lifting clamp according to claim 3, wherein the first central slot is circular in cross-section.

5. The lifting clamp base according to claim 2, wherein the second guide section comprises two second guide surfaces, and the two second guide surfaces are symmetrically arranged about a length axis of the lifting clamp base.

6. The lifting clamp of claim 5, wherein the second guide surface is angled between 30 ° and 60 ° relative to the first guide surface.

7. The lifting clamp base according to claim 1, further comprising a third guide section disposed on the lifting clamp base, the third guide section extending obliquely from the connection end toward the back of the lifting clamp base and away from the rotational shaft end, the third guide section being located in a central region of the second guide section, the third guide section being configured to guide a second gauge instrument onto a predetermined extension path.

8. The lifting clamp of claim 7, wherein 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 of claim 8, wherein the angle between the second guide surface and the side wall of the third guide section is not less than 135 °.

10. The lifting clamp base according to claim 7, wherein the third guiding section comprises two third guiding surfaces, the two third guiding surfaces are symmetrically arranged with respect to the length axis of the lifting clamp base, and an included angle of not less than 90 ° is formed between the two third guiding surfaces.

11. The lifting clamp base according to claim 10, wherein the first guiding section comprises two first guiding surfaces, the two first guiding surfaces are symmetrically arranged about a length axis of the lifting clamp base, and an included angle between the two first guiding surfaces is smaller than an included angle between the two third guiding surfaces.

12. The lifting clamp of claim 10, wherein a third central slot is provided in the third guide section, the third central slot being formed between the two third guide surfaces.

13. The lifting clamp base according to claim 12, wherein the first guide section comprises a first central groove and two first guide surfaces, the two first guide surfaces are symmetrically arranged about a length axis of the lifting clamp base, the first central groove is formed between the two first guide surfaces, and an included angle between a central axis of the first central groove and a central axis of the third central groove is 10 ° to 45 °.

14. The lifting clamp of claim 12, wherein the third central slot is circular in cross-section.

15. The lifting clamp of claim 14, wherein the third central slot has a circular arc diameter, the circular arc diameter being no greater than 19G.

16. The lifting jaw of claim 7, wherein the third guide section has a tangent point thereon tangent to the second gauge instrument having a predetermined diameter size, the first guide section and the second guide section intersecting at the tangent point.

17. The lifting clamp base of any one of claims 1-16, wherein the second guide section includes a multi-stage guide surface that in turn contacts the step when the first gauge instrument is retracted on the retraction path.

18. An endoscope comprising a head end portion on which the forceps raising seat according to any one of claims 1 to 17 is provided.

19. The endoscope of claim 18, wherein the head end comprises an ultrasound probe having a central axis that is coplanar with a central axis of the extension path.