CN-224206801-U - Endoscope head and endoscope

Abstract

The utility model discloses an endoscope head end part which is arranged at the front end side of an insertion part in the insertion direction and comprises a side end opening part, an instrument channel, a forceps lifting device, a supporting seat and a guide and matching part, wherein the side end opening part is arranged at the side surface opening of the head end part, the instrument channel is arranged in the insertion part and communicated with the instrument channel and used for guiding a guide wire, the forceps lifting device is opposite to the channel opening and provided with an abutting surface for abutting the guide wire, the guide part is arranged on the abutting surface, the supporting seat is used for supporting the forceps lifting device and provided with the guide and matching part, the guide part and the guide and matching part jointly act on the guide wire to enable the guide wire to move along the guide wire guide path in the lifting process, and after the forceps lifting device is lifted, the guide wire is fixed at the edge part of the guide part, and an included angle between the pressing force of the forceps lifting device acting on the guide wire and the movement direction of the forceps lifting device is an acute angle. The utility model can prevent the guide wire from being pulled out accidentally after the forceps lifter is lifted, so that the guide wire is reliably kept at a preset position when the treatment instrument (except the guide wire) is replaced.

Inventors

• FU YE
• HU JIAN
• REN YONGQIANG
• WANG YANTAO

Assignees

• 上海澳华内镜股份有限公司

Dates

Publication Date

20260508

Application Date

20241225

Claims (10)

1. 1. An endoscope lens end portion provided on a distal end side in an insertion direction of an insertion portion, comprising: A side end opening portion provided in a side surface opening of the head end portion; an instrument channel disposed within the insertion portion; a channel opening which is in a horn shape and is communicated with the instrument channel for guiding out a guide wire; The forceps lifting device is arranged opposite to the channel opening and is provided with an abutting surface for abutting the guide wire; A guide portion provided on the abutment surface; The supporting seat is used for supporting the forceps lifter and is provided with a guide matching part; The guide part and the guide matching part act on the guide wire together to enable the guide wire to move along the guide path of the guide wire in the lifting process of the forceps lifter; After the forceps lifter is lifted, the guide wire is fixed on the edge-shaped part of the guide part, and an included angle between the pressing force of the forceps lifter on the guide wire and the movement direction of the forceps lifter is an acute angle.
2. 2. The endoscope end portion according to claim 1, wherein one side edge of the guide portion has a rib provided with the blade portion capable of press-contacting with the guide wire.
3. 3. The endoscope head portion according to claim 1, wherein the guide fitting portion has a receiving groove provided opposite to the blade portion, the receiving groove having a circular arc-shaped cross section, and a central angle corresponding to the circular arc is smaller than 180 °.
4. 4. The endoscope end portion of claim 1 wherein the channel opening has a side wall distal from the side end opening portion, the guide portion having a predetermined area adjacent the side wall, the guide portion and the side wall having a smooth transition therebetween prior to lifting of the forceps holder, the predetermined area being further from the side end opening portion than the side wall.
5. 5. The endoscope end portion of claim 3 wherein the blade is spaced from the receiving groove by no more than the diameter of the guidewire after the clip is lifted.
6. 6. The endoscope end portion of claim 1, wherein a gap between the guide portion and the guide mating portion gradually decreases along an introduction direction of the introduction path.
7. 7. The endoscope head portion according to claim 1, wherein a lateral stopper portion is provided on a side of the abutment surface which is adjacent to the blade portion in an extending direction of the abutment surface, and the lateral stopper portion protrudes toward a base end side of the insertion portion on the forceps lifter after the forceps lifter is lifted.
8. 8. The endoscope end portion of claim 7, wherein after lifting of the clip lifter, there is a unique contact between the clip lifter and the support block in the non-leaded state, the unique contact being formed as a first contact between the lateral stop portions of the support block.
9. 9. The endoscope head portion of claim 1 wherein the support block is integrally formed with the head end.
10. 10. An endoscope comprising the endoscope head of any one of claims 1 to 9.

Description

Endoscope head and endoscope Technical Field The utility model relates to the technical field of medical endoscopes, in particular to an endoscope head end and an endoscope. Background The distal end of the side-view endoscope insertion section is inserted near the duodenal papilla, from which a guide wire inserted into the treatment instrument insertion passage in the insertion section is projected from a side opening formed in the distal end of the insertion section under X-ray fluoroscopy, and the guide wire is guided, and a treatment instrument such as a catheter is selectively inserted into the pancreatic duct, bile duct, or hepatic duct. According to this method, once the guide wire is inserted into the pancreatic duct, bile duct, or hepatic duct having a thin duct, the treatment instrument can be inserted into and removed from the duct via the guide wire any number of times. However, when a treatment instrument is pulled out from a pancreatic duct, a bile duct, or a hepatic duct through a treatment instrument insertion channel or during exchange of the treatment instrument, the guide wire may be withdrawn with the instrument, and the guide wire and the treatment instrument may be unintentionally pulled out or slipped together due to close contact between the treatment instrument and the guide wire, which may cause the guide wire to be reinserted, thereby increasing the complexity of the operation. Prior art CN113473525A discloses that a guide wire guided out from a through instrument channel opening can be fixed at a specific position by a guide wire holding portion, and the first guide portion and the second guide portion can guide the guide wire to the specific position of the guide wire holding portion and fix the guide wire, but the clamping fit between the forceps lifter and the supporting seat structure is not realized, and after the contact between the forceps lifter and the supporting seat is released or released when the treatment instrument is withdrawn, the guide wire can still be reliably fixed by the forceps lifter through the structural fit between the forceps lifter and the supporting seat. Therefore, in the prior art, when the treatment instruments are exchanged, the technical problem that the guide wire is accidentally pulled out along with the switching of the treatment instruments (except the guide wire) cannot be solved. Disclosure of utility model The utility model provides an endoscope head end and an endoscope, which further optimize the locking structure of a guide wire on a forceps lifter and a supporting seat, so that the guide wire is always kept in a preset state in complex treatment instrument (except the guide wire) operation, and particularly when the treatment instrument (except the guide wire) is replaced, the guide wire can be prevented from being pulled out accidentally along with the treatment instrument (except the guide wire) by matching and clamping and fixing a blade-shaped part of the guide wire on the forceps lifter with a support. In order to achieve the above object, an endoscope lens end portion according to an aspect of the present utility model is provided on a distal end side in an insertion direction of an insertion portion, and includes: A side end opening portion provided in a side surface opening of the head end portion; An instrument channel disposed within the insertion portion; a channel opening which is in a horn shape and is communicated with the instrument channel for guiding out a guide wire; The forceps lifter is arranged opposite to the channel opening of the instrument channel and is provided with an abutting surface for abutting the guide wire; a guide portion provided on the abutment surface; The supporting seat is used for supporting the pliers lifting device and is provided with a guide matching part; During the lifting process of the forceps lifting device, the guide part and the guide matching part jointly act on the guide wire to enable the guide wire to move along the guide path of the guide wire; After the clamp lifter is lifted, the guide wire is fixed on the blade-shaped part of the guide part, and the pressing force of the clamp lifter on the guide wire and the moving direction of the clamp lifter form an acute angle. Optionally, one side bead of the guiding part is provided with a blade part, the blade structure is matched with the guiding matching part to guide and restrain the guide wire to the blade part formed at the preset position of the guiding part, and the clamping and fixing of the guide wire are realized through the matching and restraining of the blade part and the guiding matching part. Alternatively, the guide portion engaging portion includes a receiving groove provided opposite to the predetermined position. Optionally, the section of the accommodating groove is arc-shaped, and the central angle corresponding to the arc is smaller than 180 degrees. Optionally, the channel opening has a side wall remote from the