CN216876528U

CN216876528U - Dual-channel working sleeve for cutting

Info

Publication number: CN216876528U
Application number: CN202122946458.4U
Authority: CN
Inventors: 贺石生; 倪海键; 冯超博
Original assignee: Shanghai Tenth Peoples Hospital
Current assignee: Shanghai Tenth Peoples Hospital
Priority date: 2021-11-28
Filing date: 2021-11-28
Publication date: 2022-07-05
Anticipated expiration: 2031-11-28

Abstract

The utility model provides a can cut and use binary channels working sleeve, includes the body be formed with on the body and be used for stretching into the first end at operation position and for the second end of first end, follow first end extremely the second end, the external diameter of body increases gradually the first end of body is served and is formed with protruding portion, protruding portion form in on the lower terminal surface of the first end of body, and to keeping away from protruding the stretching of the direction of body be formed with the cutting limit between protruding portion with the first end of body, the cutting limit is located the both sides of protruding portion each side of protruding portion, the cutting limit connect in protruding portion orientation between the tip of first end and the up end of first end, from the side, the edge of cutting plane is the arc, and this arc is outstanding to the direction of keeping away from first end. The double-channel working sleeve for cutting can be more easily inserted into a human body when a minimally invasive spine surgery is carried out.

Description

Dual-channel working sleeve for cutting

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a dual-channel working sleeve for cutting.

Background

With the concept of minimally invasive spine surgery getting deeper and deeper, more and more spine surgeons use minimally invasive surgery as the first-choice treatment strategy.

In order to better perform minimally invasive spine surgery, a dual-channel working sleeve for cutting is adopted in the prior art, the outer diameter of a tube body of the dual-channel working sleeve for cutting is gradually reduced from one end of an inlet to one end of an outlet, an interlayer is arranged in the tube body to divide the working sleeve into a working channel and an endoscope channel, the working sleeve can be inserted into a human body through the arrangement, surgery is performed through the working channel, observation is performed through the endoscope channel, surgery is performed better, and the success rate of the surgery is improved.

However, since the surgical site needs to be penetrated layer by layer during the operation, the effect of the protrusion of the front end of the working channel is limited.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a dual-channel working cannula for cutting, which can be inserted into a human body more easily during minimally invasive spine surgery, and can perform auxiliary cutting by rotating the working cannula during the surgery due to the existence of a cutting edge, thereby increasing the surgery efficiency.

The utility model provides a double-channel working sleeve for cutting, which comprises a pipe body, wherein a first end extending into a surgical site and a second end opposite to the first end are formed on the pipe body, the outer diameter of the pipe body is gradually increased from the first end to the second end, a protruding part is formed on the first end of the tube body, the protruding part is formed on the lower end face of the first end of the tube body and protrudes towards the direction far away from the tube body, cutting edges are formed between the protruding part and the first end of the tube body, the cutting edges are positioned at two sides of the protruding part, on each side of the protruding portion, the cutting edge is connected between the end portion of the protruding portion facing the first end and the upper end face of the first end, and the edge of the cutting surface is arc-shaped when viewed from the side, and the arc protrudes in the direction away from the first end.

Further, the protruding part is duckbilled.

Further, the height of the cutting edge gradually increases from a side near the protrusion to a side near the first end as viewed from the side.

Further, an interlayer is formed in the tube body, and the interior of the tube body is divided into a working channel and an endoscope channel through the interlayer.

Further, the upper surface of the interior of the tube body and the upper surface of the interlayer form a working channel together, and the lower surface of the interior of the tube body and the upper surface of the interlayer form an endoscope channel together.

Furthermore, the interlayer is horizontally arranged along the axial direction of the interior of the pipe body, and a first cleaning pipeline and a second cleaning pipeline are further formed in the interlayer.

Furthermore, the working channel and the inner channel are connected through a vertical interlayer, and a first cleaning pipeline and a second cleaning pipeline are formed on two sides of the interlayer.

Further, a space is formed between the working channel and the inner channel at the second end of the tube body, and the distance between the working channel and the endoscope channel decreases from the second end of the tube body to the first end of the tube body.

Further, a handle is formed at a second end of the tube body, and a length from an upper portion of the handle to a center of the tube body is greater than a length from a lower portion of the handle to the center of the tube body as viewed from an end surface of the second end.

In summary, in the present invention, the protruding portion is formed on the lower end surface of the first end of the tube body extending into the operation site, which facilitates the insertion of the tube body into the human body and guides the dual channel cutting working cannula during the insertion, and further, the cutting edge is formed into an arc-shaped edge protruding outward by the arrangement of the cutting edge, so that the cutting edge can cut the skin or muscle tissue of the human body when the tube body enters the human body, and the dual channel cutting working cannula can move to the operation site within the human body with a small acting force by the combined action of the protruding portion and the cutting edge, so that the dual channel cutting working cannula can be inserted into the human body more easily. After the working channel is constructed, the working sleeve can be rotated to carry out simple auxiliary operation on bone tissues and the like through the cutting edge in the operation process.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of a cuttable double-channel working sleeve according to a first embodiment of the present invention.

FIG. 2 is a side view of the end of the dual path cutting work sleeve of FIG. 1.

FIG. 3 is a schematic view of the construction of the cuttable two pass work sleeve of FIG. 1 at the end face of the first end.

FIG. 4 is a schematic cross-sectional view of the dual path cutting work sleeve of FIG. 1 at a first end.

FIG. 5 is a schematic cross-sectional view of a second embodiment of the cuttable two-pass work sleeve of the present invention at the second end.

Detailed Description

To further explain the technical means and effects of the present invention for achieving the intended purpose of the utility model, the following detailed description is given with reference to the accompanying drawings and preferred embodiments.

The utility model provides a dual-channel working sleeve for cutting, which can be more easily inserted into a human body when a minimally invasive spine surgery is performed.

Fig. 1 is a schematic structural view of a dual-channel working cannula for cutting according to a first embodiment of the present invention, fig. 2 is a schematic structural view of an end portion of the dual-channel working cannula for cutting according to fig. 1, fig. 3 is a schematic structural view of an end surface of a second end of the dual-channel working cannula for cutting according to fig. 1, fig. 4 is a schematic structural view of a cross-sectional view of a first end of the dual-channel working cannula for cutting according to fig. 1, as shown in fig. 1 to 4, the dual-channel working cannula for cutting according to the first embodiment of the present invention includes a tube body 10, a first end 11 for extending into a surgical site and a second end 12 opposite to the first end 11 are formed on the tube body 10, an outer diameter of the tube body 10 is gradually increased from the first end 11 of the tube body 10 to the second end 12 of the tube body 10, a protrusion 13 is formed on the first end 11 of the tube body 10, and the protrusion 13 is formed on a lower end surface of the first end 11 of the protrusion body 10, and projects in a direction away from the tube body 10, a cutting edge 14 is formed between the projecting portion 13 and the first end 11 of the tube body 10, the cutting edges 14 are located at both sides of the projecting portion 13, the cutting edge 14 is connected between the end portion of the projecting portion 13 facing the first end 11 of the tube body 10 and the upper end surface of the first end 11 at each side of the projecting portion 13, the edge of the cutting surface is arc-shaped when viewed from the side, the center of curvature of the arc is located at the side of the cutting surface facing the first end 11, that is, the arc projects in a direction away from the first end 11.

In this embodiment, by forming the protruding portion 13 on the lower end surface of the first end 11 of the tube 10 extending into the operation site, it is possible to insert the tube 10 into the human body conveniently, and guide the dual-channel cutting working cannula in an insertion manner, further, by providing the cutting edge 14, the cutting edge 14 forms an arc-shaped edge protruding outward, when the tube 10 enters the human body, the cutting edge 14 can cut the skin or muscle tissue of the human body, and by the combined action of the protruding portion 13 and the cutting edge 14, the dual-channel cutting working cannula can move to the operation site in the human body with a small acting force, so that the dual-channel cutting working cannula can be inserted into the human body more easily.

Further, in the present embodiment, the protrusion 13 is duckbill-shaped. The length of the duckbill protruding from the cutting edge 14 is 2-5 cm.

Further, in the present embodiment, the height of the cut edge 14 (i.e., the thickness of the cut edge 14 in the vertical direction in fig. 2) gradually increases from the side near the protrusion 13 to the side near the first end 11 of the tube 10 as viewed from the side.

Further, referring to fig. 1 to 4, in the present embodiment, an interlayer 15 is formed in the tube 10, and the interior of the tube 10 is divided into a working channel 161 and an endoscope channel 162 by the interlayer 15. Working channel 161 is used for placement of surgical instruments and endoscope channel 162 is used for placement of endoscopes.

In this embodiment, the upper surface of the interior of the tube 10 and the upper surface of the interlayer 15 together form a working channel 161, and the lower surface of the interior of the tube 10 and the lower surface of the interlayer 15 together form an endoscope channel 162. That is, as shown in fig. 4, the interlayer 15 divides the interior of the tube 10 into upper and lower tube-shaped channels, the upper channel being a working channel 161 and the lower channel being an endoscope channel 162.

More specifically, the interlayer 15 is disposed horizontally along the axial direction of the inside of the tube 10, the working channel 161 and the endoscope channel 162 are both disposed toward the second end 12 from the first end 11 of the tube 10, and further, the working channel 161 and the endoscope channel 162 are integrally divided by the interlayer 15 into two relatively independent pipe structures disposed obliquely. The inner profile of working channel 161 can be larger than the inner profile of endoscope channel 162. At the second end 12 of the shaft 10, a space is formed between the working channel 161 and the endoscope channel 162, the space being the thickness of the interlayer 15, the thickness of the interlayer 15 gradually decreasing from the second end 12 of the shaft 10 to the first end 11 of the shaft 10, and the working channel 161 and the endoscope channel 162 gradually converging, i.e., the distance therebetween gradually decreasing, such that the working channel 161 and the endoscope channel 162 are tangent.

Further, a first cleaning pipe 163 and a second cleaning pipe 164 are formed in the pipe 10, and a first port 171 and a second port 172 communicating with the first cleaning pipe 163 and the second cleaning pipe 164, respectively, are provided in the pipe 10. Through the first cleaning line 163 and the second cleaning line 164, a cleaning liquid can be introduced and discharged as needed during the operation. In the present embodiment, the first cleaning pipeline 163 and the second cleaning pipeline 164 are formed in the interlayer 15.

Further, a handle 18 is formed at the second end 11 of the tube 10, and the handle 18 may be disposed in a substantially diamond plate structure. The four corners of the handle 18 are rounded when viewed from the end surface of the second end 12, and the length from the upper portion of the handle 18 to the center of the tube 10 is greater than the length from the lower portion of the handle 18 to the center of the tube 10. The medical staff can insert or screw the whole tube body 10 through the handle 18.

FIG. 5 is a schematic cross-sectional view of a second embodiment of the cuttable two-pass work sleeve of the present invention at the second end. The second embodiment of the present invention is substantially the same as the first embodiment except that in this embodiment, a vertical interlayer 15 connects the working channel 161 and the endoscope channel 162 at the first end 11 of the cuttable dual channel working cannula. The first cleaning line 163 and the second cleaning line 164 are formed on two sides of the interlayer 15, and the height of the interlayer 15 gradually decreases along the direction from the second end 12 to the first end 11 of the tube 10, so that the working channel 161 and the endoscope channel 162 gradually approach each other.

In summary, in the present invention, the protrusion 13 is formed on the lower end surface of the first end 11 of the tube 10 extending into the operation site, which facilitates the insertion of the tube 10 into the human body and guides the dual-channel cutting working cannula in an insertion manner, and further, the cutting edge 14 is formed into an arc-shaped edge protruding outward by the arrangement of the cutting edge 14, so that the cutting edge 14 can cut the skin or muscle tissue of the human body when the tube 10 enters the human body, and the dual-channel cutting working cannula can move to the operation site in the human body with a small acting force by the combined action of the protrusion 13 and the cutting edge 14, so that the dual-channel cutting working cannula can be inserted into the human body more easily. After the working channel is constructed, the working sleeve can be rotated to carry out simple auxiliary operation on bone tissues and the like through the cutting edge in the operation process.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A dual-channel working sleeve for cutting is characterized in that: the cutting device comprises a tube body, wherein a first end used for extending into an operation part and a second end opposite to the first end are formed on the tube body, the first end extends to the second end, the outer diameter of the tube body is gradually increased, a protruding portion is formed on the first end of the tube body, the protruding portion is formed on the lower end face of the first end of the tube body and protrudes in the direction far away from the tube body, a cutting edge is formed between the protruding portion and the first end of the tube body and located on two sides of the protruding portion, each side of the protruding portion is connected between the end portion, facing the first end, of the protruding portion and the upper end face of the first end, the edge of a cutting surface is arc in side view, and the arc protrudes in the direction far away from the first end.

2. The cuttable dual-lane working sleeve according to claim 1, wherein: the protruding part is duckbilled.

3. The cuttable dual-lane working sleeve according to claim 1, wherein: the height of the cutting edge gradually increases from a side near the protrusion to a side near the first end as viewed from the side.

4. The cuttable dual-lane working sleeve according to claim 1, wherein: an interlayer is formed in the tube body, and the interior of the tube body is divided into a working channel and an endoscope channel through the interlayer.

5. The cuttable dual-lane working sleeve according to claim 4, wherein: the upper surface of the inner part of the tube body and the upper surface of the interlayer form a working channel together, and the lower surface of the inner part of the tube body and the upper surface of the interlayer form an endoscope channel together.

6. The cuttable dual-lane working sleeve according to claim 5, wherein: the interlayer is horizontally arranged along the axial direction inside the pipe body, and a first cleaning pipeline and a second cleaning pipeline are further formed in the interlayer.

7. The cuttable dual-lane working sleeve according to claim 5, wherein: the working channel and the inner channel are connected through a vertical interlayer, and a first cleaning pipeline and a second cleaning pipeline are formed on two sides of the interlayer.

8. The cuttable dual-lane working sleeve according to claim 5, wherein: a space is formed between the working channel and the inner channel at the second end of the tube body, and a distance between the working channel and the endoscope channel decreases from the second end of the tube body to the first end of the tube body.

9. The cuttable dual-lane working sleeve according to claim 1, wherein: a handle is formed at the second end of the tube body, and a length from an upper portion of the handle to a center of the tube body is greater than a length from a lower portion of the handle to the center of the tube body as viewed from an end surface of the second end.