CN211243269U - Endoscope and insertion head thereof - Google Patents

Abstract

The utility model provides an endoscope and insert head end thereof inserts the head end and includes the head end main part, lifts pincers ware, stay cord and seal assembly. The head end main body is provided with an installation space, an instrument channel and a pull rope channel; the end part of the pull rope is fixed with the forceps lifting device so as to pull the forceps lifting device to rotate and drive the surgical instrument; the baffle in the sealing assembly is fixedly arranged outside the pull rope in a penetrating way, the sealing ring is annularly arranged and fixed on the periphery of the baffle, and the periphery of the sealing ring is attached to the inner wall of the pull rope channel; the elastic piece generates elastic deformation when the pull rope is pulled so as to drive the sealing ring to seal the port of the pull rope channel. Through the synergistic action of separation blade and sealing washer, can effectively seal between sealing washer and the stay cord, between sealing washer and the stay cord passageway and the port department of stay cord passageway, avoid liquid substances such as blood, body fluid of disease to get into the endoscope through the clearance between stay cord and the stay cord passageway, prevent the infection of disease to guarantee the follow-up sterile validity of endoscope, ensure the security of endoscopic surgery.

Description

Endoscope and insertion head thereof

Technical Field

The utility model relates to the technical field of medical equipment, in particular to endoscope and insert head end thereof.

Background

An endoscope is a commonly used medical apparatus, which can enter into the body of a patient through a natural duct of the human body or through an incision formed by operation, so that medical staff can observe the lesion site in the body and perform treatment in a targeted manner.

In some targeted procedures, an endoscope is often required to cooperate with a surgical instrument, such as a biopsy forceps, to remove the diseased tissue. The endoscope is internally provided with a channel for the surgical instrument to pass through, the channel is internally provided with a forceps lifting device for driving the surgical instrument to rotate, and the forceps lifting device is pulled by a steel wire rope, so the inside of the endoscope is also provided with a channel for the steel wire rope to pass through.

In the operation process, there is axial pulling clearance between wire rope and its cooperation passageway for liquid materials such as the blood of disease, body fluid pass through the inside of this clearance entering endoscope, not only lead to the endoscope to be difficult to thoroughly disinfect, become the operation potential safety hazard, get into in the endoscope inside contaminated liquid reflux easily moreover and get into in the human body, lead to the infection of disease, seriously influence the operation effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve prior art's endoscope, lift and have axial pulling clearance between pincers ware wire rope and its cooperation passageway for liquid substances such as the blood of disease, body fluid not only lead to the endoscope to be difficult to the thorough disinfection through the inside that this clearance got into the endoscope, become the operation potential safety hazard, get into in the inside contaminated liquid of endoscope flows back easily and gets into the human body in addition, lead to the infection of disease, seriously influence the technical problem of operation effect.

In order to solve the technical problem, the utility model provides an insertion head end of an endoscope, which comprises a head end main body, a forceps lifting device, a pull rope and a sealing component, wherein one end of the head end main body is provided with an installation space, the inside of the head end main body is also provided with an instrument channel and a pull rope channel which are separated along the self axis, and the instrument channel can be used for surgical instruments to pass through; the instrument channel and the pull rope channel both extend to the installation space from the other end of the head end main body and are communicated with the installation space; a forceps lifter is arranged in the installation space and used for carrying the surgical instrument; the forceps lifter can rotate relative to the head end main body so as to drive the surgical instrument to rotate; the pull rope is arranged in the pull rope channel in a penetrating way; the end part of the pull rope extends into the installation space and is fixed with the forceps lifting device so as to pull the forceps lifting device to rotate; the sealing assembly is arranged in the pull rope channel and comprises a sealing ring, a blocking piece and an elastic piece; the baffle plate is fixedly arranged outside the pull rope in a penetrating way, the sealing ring is annularly arranged and fixed on the periphery of the baffle plate, and the periphery of the sealing ring is attached to the inner wall of the pull rope channel; the elastic piece is arranged on one side, away from the forceps lifting device, of the sealing ring so as to generate elastic deformation when the pull rope is pulled; the elastic part which generates elastic deformation can drive the sealing ring, so that the end surface of the sealing ring is abutted and sealed with the port of the pull rope channel.

Optionally, the sealing ring is a hollow columnar structure, the periphery of the blocking piece is fixed to the inner wall of the sealing ring, and the end portion of the sealing ring extends out of the blocking piece.

Optionally, the sealing ring is made of a highly elastic polymer material, so that the opening at the end of the sealing ring can be elastically expanded under pressure.

Optionally, the insertion head further comprises a stopper fixed inside an end of the pull rope channel away from the forceps raising device, and the elastic member is disposed between the stopper and the sealing ring.

Optionally, the elastic member is a spring, and the spring is sleeved outside the pull rope.

Optionally, the pull rope is a steel wire rope, and the blocking piece is welded and fixed with the steel wire rope.

Optionally, the sealing ring is integrally formed with the flap.

Optionally, the sealing ring is injection molded on the outside of the flap.

Optionally, the insertion head end further includes a fixing block, the fixing block is fixed to a port of the rope passage near the forceps raising device, a hole through which the rope passes is formed in the fixing block, and an inner diameter of the hole is smaller than an inner diameter of the rope passage.

The utility model also provides an endoscope, be in including extension and setting the operating parts of extension one end, the endoscope still includes foretell insertion head end, the insertion head end sets up the extension deviates from the tip of operating parts.

According to the above technical scheme, the beneficial effects of the utility model are that:

the utility model discloses endoscope and insert in the head end thereof, through the synergism of separation blade and sealing washer, can be to between sealing washer and the stay cord, between sealing washer and the stay cord passageway and the port department of stay cord passageway effectively seal, liquid substances such as the blood of avoiding the disease, body fluid pass through the clearance between stay cord and the stay cord passageway and get into the endoscope, prevent the infection of disease to guarantee the follow-up sterile validity of endoscope, ensure the security of endoscopic surgery.

Drawings

FIG. 1 is a schematic structural view of an embodiment of an insertion head end of an endoscope of the present invention;

FIG. 2 is a top view of the insertion tip of FIG. 1;

FIG. 3 is a cross-sectional view of the insertion tip shown in FIG. 1;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

fig. 5 is a schematic view of the internal structure of the head end main body in the insertion head end shown in fig. 1.

The reference numerals are explained below: 10. inserting the head end; 11. a head end body; 111. an installation space; 112. an instrument channel; 113. a rope pulling channel; 114. an assembly space; 12. lifting the pliers; 121. a main body portion; 122. a connecting portion; 123. mounting grooves; 124. a rotating shaft; 125. mounting holes; 13. pulling a rope; 14. a seal assembly; 141. a seal ring; 142. a baffle plate; 143. an elastic member; 15. a camera assembly; 16. a mounting seat; 17. a fixed block; 171. a tunnel.

Detailed Description

Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

For further explanation of the principles and construction of the present invention, reference will now be made in detail to the preferred embodiments of the present invention, which are illustrated in the accompanying drawings.

For the purpose of the following description, unless otherwise specified, the endoscope of the present application is used with the end near the health care provider being the proximal end and the end away from the health care provider being the distal end, regardless of the location of the endoscope.

An embodiment of the present application provides an endoscope that can be used to observe a lesion in an organ in a human body and can be used in conjunction with a related surgical instrument to remove a lesion tissue in the body. The endoscope can be used for the internal examination operation of duodenum, and can be used as a duodenoscope. The endoscope of the present embodiment includes an insertion head end, an extension member, and an operation member, wherein the insertion head end and the operation member are respectively provided at both ends of the extension member.

In this embodiment, the extension member is tubular and may be bent at will. When the endoscope is used, the insertion head end and the extension piece enter the human body together, medical workers control the extension piece and the insertion head end by controlling the operation piece so as to obtain an image of a pathological change part in the human body, and the pathological change tissue is taken out by matching with surgical instruments.

Referring to fig. 1 to 4, the insertion head 10 of the present embodiment includes a head main body 11, a forceps 12, a pulling rope 13, and a sealing member 14.

Specifically, one end of the head end main body 11 is provided with an installation space 111, and the interior of the head end main body 11 is further provided with an instrument channel 112 and a pull rope channel 113 which are separated along the axis of the head end main body 11, wherein the instrument channel 112 can be used for passing surgical instruments. The instrument channel 112 and the pull rope channel 113 both extend from the other end of the head end body 11 to the installation space 111, and both communicate with the installation space 111.

A jaw lifter 12 is arranged in the installation space 111, which jaw lifter 12 is used to carry a surgical instrument. The forceps-lifting device 12 can rotate relative to the head end main body 11 to drive the surgical instrument to rotate. The pulling rope 13 is inserted into the pulling rope channel 113, and the end of the pulling rope 13 extends into the installation space 111 and is fixed with the forceps raising device 12 so as to pull the forceps raising device 12 to rotate.

A seal assembly 14 is disposed in the pull cord passage 113, the seal assembly 14 including a sealing ring 141, a flap 142, and an elastic member 143. The baffle 142 is fixed outside the pull rope 13 in a penetrating way, the sealing ring 141 is fixed on the periphery of the baffle 142 in a surrounding way, and the periphery of the sealing ring 141 is attached to the inner wall of the pull rope channel 113. The elastic member 143 is disposed on a side of the packing 141 facing away from the caliper 12 to be elastically deformed when the pulling rope 13 is pulled. The elastically deformed elastic member 143 can drive the packing 141 so that the end surface of the packing 141 abuts against the port of the seal rope passage 113.

Further, the head end main body 11 of the present embodiment is substantially a columnar structure. The distal end of the head end body 11 is provided with a mounting space 111, and the mounting space 111 is formed with an opening at a side wall of the head end body 11. The forceps-lifting device 12 disposed in the installation space 111 drives the surgical instrument to rotate, so that the surgical instrument is rotated out of the installation space 111 from the opening, and the surgical instrument grips the lesion tissue and takes it out of the patient.

In this embodiment, the interior of the head end main body 11 is further provided with an instrument channel 112 and a pull rope channel 113, and the instrument channel 112 and the pull rope channel 113 are isolated and independent. Wherein, the extending direction of the instrument channel 112 is consistent with the axial direction of the head end main body 11. The instrument channel 112 extends from the proximal end of the head end body 11 to the distal end and communicates with the installation space 111.

When the endoscope needs to be used in conjunction with a surgical instrument during a surgical procedure, the surgical instrument enters the installation space 111 through the instrument channel 112 and is aligned and placed on the forceps lifting device 12 so as to rotate under the driving of the forceps lifting device 12, and a corresponding surgical function is performed. The surgical instrument may be a biopsy forceps, which may be used to grasp diseased tissue.

A pull cord channel 113 is disposed on one side of the instrument channel 112, the pull cord channel 113 having an inner diameter that is less than the inner diameter of the instrument channel 112. In the present embodiment, the pull cord passage 113 passes the pull cord 13. The extending direction of the rope passage 113 coincides with the axial direction of the head end body 11, and the rope passage 113 extends from the proximal end of the head end body 11 to the distal end and communicates with the mounting space 111.

The pull cord 13 of this embodiment enters from one end of the cord passage 113 and exits from the other end of the cord passage 113. The end of the pulling rope 13 passing through the pulling rope channel 113 enters the installation space 111 and is fixed with the forceps lifting device 12 in the installation space 111, so that the pulling rope 13 can cooperate with the forceps lifting device 12 to drive the forceps lifting device 12 to rotate.

In this embodiment, the distal end of the head end main body 11 is further provided with a fitting space 114. The fitting space 114 is disposed at one side of the installation space 111 and is independent from the installation space 111. The fitting space 114 of the present embodiment is used for mounting the camera head assembly 15, and the fitting space 114 forms a visible window at the side wall of the head end body 11. Through camera assembly 15, medical personnel can effectively acquire images of the diseased tissue.

Meanwhile, when medical personnel control the surgical instrument, the position of the pathological change tissue in the human body can be accurately positioned according to the image information acquired by the camera assembly 15, so that the pathological change tissue in the patient body can be pertinently taken out, and the safety of the surgical process is ensured.

In addition, a plurality of mounting areas are further disposed on the distal end surface of the head end body 11 of the present embodiment. The camera assembly 15, the vapor jet head, the illumination light source, and the like may be disposed in the mounting area accordingly.

Wherein, be located the camera subassembly 15 of head end main part 11 terminal surface department and be located the camera subassembly 15 of head end main part 11 side can the mating reaction to obtain human inside image information at a plurality of angles, make medical personnel can accurately judge the position of pathological change tissue.

The vapor spray head is used for washing dirt on the surface of the lens in the camera assembly 15, and the camera assembly 15 can normally shoot images of the part to be detected in the body. The illumination light source is used for ensuring the brightness condition of the endoscope in the in-vivo use state and ensuring the definition of the image shot by the camera assembly 15.

Further, a caliper lifter 12 of the present embodiment is provided in the mounting space 111, and the caliper lifter 12 includes a main body portion 121 and the main body portion 121 fixed to the main body portion 121.

In the present embodiment, the main body 121 is concavely provided with a mounting groove 123, and the mounting groove 123 is used for placing a surgical instrument. After the surgical instrument enters the installation space 111 through the instrument channel 112, the surgical instrument can be carried into the installation groove 123 of the body portion 121. The mounting groove 123 can ensure the stability of the position of the surgical instrument relative to the forceps lifting device 12, avoid the surgical instrument from falling off from the forceps lifting device 12, and ensure the smooth operation.

The mounting space 111 of the head end main body 11 is further provided with a mounting seat 16, the mounting seat 16 is used for assembling the forceps raising device 12, and the mounting seat 16 is fixed in the mounting space 111. Body portion 121 of the present embodiment is disposed at a proximal end of body portion 121, and body portion 121 is integrally formed with body portion 121.

In the present embodiment, the body 121 is rotatably connected to the mounting base 16 by a rotating shaft 124, and the axial direction of the rotating shaft 124 is perpendicular to the axial direction of the head end body 11. When the pulling rope 13 pulls the forceps holder 12, the forceps holder 12 can be lifted and dropped in the thickness direction of the head end main body 11 by the rotating shaft 124, so that the surgical instrument on the forceps holder 12 is rotated to position and clamp the lesion tissue.

Further, the rope 13 of the present embodiment is a steel wire rope having a certain hardness. The pull rope 13 is inserted into the pull rope passage 113, and the distal end of the pull rope 13 extends into the installation space 111 and is fixed to the forceps holder 12. In the caliper raising device 12 of the present embodiment, the body portion 121 is provided with the mounting hole 125. The distal end of the pull cord 13 is inserted through the mounting hole 125 to be fixed to the forceps holder 12.

In the operation process, when the angle of the surgical instrument needs to be adjusted, the forceps lifting device 12 can be lifted or dropped relative to the head end main body 11 by pulling the pull rope 13, that is, the forceps lifting device 12 rotates relative to the head end main body 11, so that the angle position of the surgical instrument on the forceps lifting device 12 is changed, and medical staff is assisted to clamp the pathological change tissue in the body of a patient in a targeted manner.

Further, the sealing assembly 14 is further disposed in the pull rope channel 113 of the embodiment, and the sealing assembly 14 is used for sealing a port of the pull rope channel 113, so as to prevent liquid substances such as blood and body fluid of a patient from entering the endoscope through a gap between the pull rope 13 and the pull rope channel 113, prevent infection of the patient, ensure effectiveness of subsequent disinfection of the endoscope, and ensure safety of endoscopic surgery.

In the present embodiment, the blocking piece 142 is a sheet-shaped structure made of metal, and is disposed on a portion of the pull rope 13 near the port of the pull rope channel 113. The blocking piece 142 is welded and fixed with the pull rope 13, so that the sealing performance of the blocking piece 142 and the periphery of the pull rope 13 is guaranteed, and liquid substances are prevented from flowing out between the blocking piece 142 and the pull rope 13.

The sealing ring 141 is fixed around the outer periphery of the blocking piece 142, the sealing ring 141 of this embodiment is a hollow cylindrical structure, and both ends of the sealing ring 141 extend outward beyond both sides of the blocking piece 142. The stopper 142 is fixed on the inner wall of the seal ring 141 on the circumferential side thereof, and the outer periphery of the seal ring 141 is fitted to the inner wall of the string passage 113, so that liquid substances such as blood and body fluid of a patient are prevented from passing between the stopper 142 and the seal ring 141 and between the seal ring 141 and the string passage 113.

In the present embodiment, the sealing ring 141 is made of a highly elastic polymer material, such as rubber, and the sealing ring 141 is integrally injection-molded on the outside of the flap 142.

The sealing ring 141 and the baffle 142 are assembled in an integrated injection molding mode, so that the assembling procedure is simplified, the sealing ring 141 is rapidly assembled outside the baffle 142, the connection stability of the sealing ring 141 and the baffle 142 can be ensured, reliable sealing between the sealing ring 141 and the baffle 142 is ensured, liquid substances such as blood and body fluid of patients are prevented from passing between the baffle 142 and the sealing ring 141, and the safety of the endoscopic surgery is ensured.

The opening at the end of the packing 141 made of a highly elastic polymer material can be elastically expanded in a pressure state. Specifically, under the pressure state such as air pressure or water pressure, the sealing ring 141 generates elastic expansion towards the opening of the one end of the far-end port of the stay cord channel 113, so that the outer wall of the sealing ring 141 can be tightly attached to the inner wall of the stay cord channel 113, the sealing performance between the sealing ring 141 and the stay cord channel 113 is ensured, and the pollutants are effectively prevented from entering the endoscope.

Further, the insertion head end 10 of the present embodiment further includes a stopper. The stopper is fixed to the inside of the end of the pull rope passage 113 remote from the forceps 12, i.e., the stopper is provided near the proximal end port of the pull rope passage 113. The stopper is provided with a via hole for the pull rope 13 to pass through.

The elastic member 143 is disposed between the stopper and the packing 141. When the pulling rope 13 is pulled, the pulling rope 13 drives the fixed stopper 142 and the seal ring 141 to move together toward the proximal end of the endoscope, and the seal ring 141 and the stopper press the elastic member 143 in opposite directions, so that the elastic member 143 is elastically deformed.

After the surgical instrument is angularly adjusted, the pulling of the pulling rope 13 is released, and under the elastic force of the elastic member 143, the elastic member 143 can drive the sealing ring 141 to move towards the distal end port of the pulling rope channel 113, so that the end surface of the sealing ring 141 abuts against the port of the pulling rope channel 113, and the sealing ring 141 is matched with the blocking piece 142 to seal the port of the pulling rope channel 113.

In this embodiment, the elastic member 143 is a spring, which is sleeved on the outer portion of the pulling rope 13. The two ends of the spring can be respectively fixed with the stop blocks and the sealing rings 141, and can also be directly sleeved on the pull rope 13. When the spring is in a compressed state, the spring can generate elastic deformation so as to drive the sealing ring 141 in the rope pulling channel 113, so that the sealing ring 141 is matched with the baffle 142 to seal the port of the rope pulling channel 113.

In addition, referring to fig. 5, the insertion head end 10 of the present embodiment further includes a fixing block 17. The fixing block 17 is fixed at the port of the pull rope channel 113 close to the forceps lifting device 12, namely, the fixing block 17 is arranged at the far end port of the pull rope channel 113.

The fixing block 17 has a hole 171 formed therein for the rope 13 to pass through, and the hole 171 has an inner diameter smaller than that of the rope passage 113. The arrangement can reduce the area of the port of the stay rope channel 113 to be blocked by the sealing ring 141 and the blocking piece 142, and ensure that the sealing ring 141 and the blocking piece 142 can effectively seal the stay rope channel 113.

When the endoscope of the present embodiment is used in conjunction with a surgical instrument, the surgical instrument is inserted into the installation space 111 through the instrument channel 112, and the surgical instrument is placed on the forceps holder 12. When the angle of the surgical instrument needs to be adjusted, the pulling rope 13 is pulled to rotate the forceps lifting device 12 relative to the head end main body 11, and the elastic member 143 is elastically deformed, so that the working angle of the surgical instrument is adjusted. After the surgical instrument finishes the operation of clamping the lesion tissue, the pulling rope 13 is released to make the forceps lifting device 12 fall down, and at this time, the sealing ring 141 can abut against the port of the pulling rope channel 113 under the action of the elastic deformation of the elastic member 143, so that the sealing ring 141 is matched with the blocking piece 142 to seal the pulling rope channel 113.

To the endoscope and the insertion head end thereof of the embodiment, the separation blade and the sealing ring are cooperated to effectively seal the space between the sealing ring and the pull rope, the space between the sealing ring and the pull rope channel and the port of the pull rope channel, so that liquid substances such as blood, body fluid and the like of a patient are prevented from entering the endoscope through the gap between the pull rope and the pull rope channel, the infection of the patient is prevented, the effectiveness of the subsequent disinfection of the endoscope is ensured, and the safety of the endoscopic surgery is ensured.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (10)

1. An insertion head end of an endoscope, comprising:

the head end main body is provided with an installation space at one end, and an instrument channel and a pull rope channel which are separated from each other are also arranged in the head end main body along the axis of the head end main body, and surgical instruments can pass through the instrument channel; the instrument channel and the pull rope channel both extend to the installation space from the other end of the head end main body and are communicated with the installation space;

a forceps lifter arranged in the installation space, the forceps lifter being used for carrying the surgical instrument; the forceps lifter can rotate relative to the head end main body so as to drive the surgical instrument to rotate;

the pull rope is arranged in the pull rope channel in a penetrating mode; the end part of the pull rope extends into the installation space and is fixed with the forceps lifting device so as to pull the forceps lifting device to rotate;

the sealing assembly is arranged in the pull rope channel and comprises a sealing ring, a blocking piece and an elastic piece; the baffle plate is fixedly arranged outside the pull rope in a penetrating way, the sealing ring is annularly arranged and fixed on the periphery of the baffle plate, and the periphery of the sealing ring is attached to the inner wall of the pull rope channel; the elastic piece is arranged on one side, away from the forceps lifting device, of the sealing ring so as to generate elastic deformation when the pull rope is pulled; the elastic part which generates elastic deformation can drive the sealing ring, so that the end surface of the sealing ring is abutted and sealed with the port of the pull rope channel.

2. The insertion head end of claim 1, wherein the sealing ring is a hollow cylindrical structure, the peripheral side of the blocking piece is fixed to the inner wall of the sealing ring, and the end of the sealing ring extends outward beyond the outer side of the blocking piece.

3. The insertion head end of claim 2, wherein the sealing ring is made of a highly elastic polymer material to enable the opening at the end of the sealing ring to expand elastically under pressure.

4. The insertion head according to claim 1, further comprising a stop secured within an end of the pull-cord channel distal from the pincer-lifter, the resilient member being disposed between the stop and the sealing ring.

5. The insertion head end of claim 1, wherein the resilient member is a spring that is disposed externally of the pull cord.

6. The insertion head end of claim 1, wherein the pull cord is a steel wire rope, and the baffle is welded to the steel wire rope.

7. The insertion head end of claim 1, wherein the sealing ring is integrally formed with the flap.

8. The insertion head end of claim 1, wherein the sealing ring is injection molded on an exterior of the flap.

9. The insertion head end of claim 1, further comprising a fixing block, wherein the fixing block is fixed to a port of the cable channel near the forceps raising device, a hole for the cable to pass through is formed in the fixing block, and an inner diameter of the hole is smaller than an inner diameter of the cable channel.

10. An endoscope comprising an elongate member and an operating member disposed at one end of the elongate member, wherein the endoscope further comprises an insertion head as claimed in any one of claims 1 to 9 disposed at an end of the elongate member facing away from the operating member.

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