Cannula assembly

Abstract

The present invention relates to a cannula assembly and, specifically, comprises: a gateway having, in the center thereof, a passage hole through which a suture thread connected to an anchor driven into the wound tissue of a human body passes, and being inserted into and fixed to the human body through the incised skin; a cannula which is inserted into the passage hole of the gateway, and which has, on the outer side of the skin, a fluid supply pipe for supplying a fluid to the wound tissue; and a trocar which is inserted into the cannula, and which has a lower end portion protruding toward the wound tissue through the cannula, and thus the present invention can improve the field of view and bring a graft into close contact with the wound tissue.

Description

Cannula assembly

[0001] The present invention relates to a cannula assembly, and more particularly, to a cannula assembly that is inserted into the human body during arthroscopic surgery to connect the inside and outside of the human body and secure a surgical space and a surrounding space.

[0002] In the case of joints in the human body, such as rotator cuff surgery, Bankart repair, long head of biceps tendon rupture, glenohumeral surgery, or kneecap, cartilage, or cruciate ligament surgery, there are difficulties in securing surgical space and securing the surrounding space due to the unique and narrow anatomical shape.

[0003] Recently, arthroscopic surgery (minimally invasive surgery) is being actively performed to perform surgery on these joint areas by using a small telescope called an arthroscope to view the inside of the body.

[0004] Medical cannulas are used to secure the surgical space for these arthroscopic surgeries and to secure the surrounding space.

[0005] A medical cannula is a small tube-shaped device that is inserted and fixed into the body after making an incision in the skin. The incision is secured by the inserted cannula, and various surgical tools can be inserted through the central hole formed through the cannula to perform the necessary medical procedures.

[0006] In the case of these conventional cannulas, there is a problem in that it is difficult to secure a space for treatment and it is not easy to secure a view of the treatment area.

[0007] The present invention has been devised to solve the problems of the above-mentioned prior art, and its purpose is to provide a cannula assembly that improves the field of vision to enable precise treatment and allows a graft to adhere to wound tissue to promote rapid recovery.

[0008] The cannula assembly of the present invention for solving the above-described problem comprises: a gateway having a central through-hole through which a suture connected to an anchor embedded in the inside of a wound tissue of a human body passes, and which is inserted and fixed inside the human body through incised skin; a cannula inserted into the through-hole of the gateway, and having a fluid supply tube provided outside the skin for supplying fluid to the wound tissue; and a trocar inserted into the cannula, the lower portion of which protrudes toward the wound tissue through the cannula.

[0009] And, a cap made of an elastic material is installed on the top of the cannula, a microhole is formed in the cap, and the trocar needle is inserted into the cannula by penetrating the microhole of the cap.

[0010] Additionally, a valve is installed in the fluid supply pipe of the above cannula.

[0011] Here, the suture exposed outside the skin through the passage hole of the gateway passes through the edge of the graft to be transplanted into the wound tissue, and then acts as a guide when the graft is pushed into the skin through the passage hole of the gateway and attached to the wound tissue.

[0012] And, when the cannula passes through the passage hole of the gateway, the suture is positioned between the gateway and the cannula.

[0013] The cannula assembly of the present invention configured as described above has the advantage of supplying fluid into the skin through the fluid supply tube of the cannula, thereby improving the field of view when viewing the inside of the skin through an arthroscope.

[0014] In addition, there is an advantage in that the graft can be adhered to the wound tissue by spreading the graft with a trocar needle.

[0015] Figure 1 is a perspective view showing a cannula assembly according to the present invention.

[0016] Figures 2 to 7 are diagrams briefly showing a procedure using a cannula assembly according to the present invention.

[0017] Hereinafter, an embodiment of a cannula assembly according to the present invention will be described in detail with reference to the attached drawings.

[0018] Fig. 1 is a perspective view showing a cannula assembly according to the present invention, and Figs. 2 to 7 are diagrams briefly showing a procedure using the cannula assembly according to the present invention.

[0019]

[0020] The cannula assembly according to the present invention is used to help facilitate a procedure in which a graft (T) is attached to wound tissue (W) of a human body using a suture (A1) connected to an anchor (A) embedded within the wound tissue (W), and is composed of a gateway (10), a cannula (20) penetrating the gateway (10), and a trocar (30) passing through the cannula (20).

[0021]

[0022] The above gateway (10) is made of an elastic material such as silicone and is inserted and fixed inside the human body through the incised skin (S), and is composed of a body (11), an inner support plate (12) integrally provided on one end of the body (11), and an outer support plate (13) integrally provided on the other end of the body (11).

[0023] The above body (11) is manufactured in the shape of a pipe, has a passage hole (11a) formed in the center, and is inserted into an incision formed in the skin.

[0024] The above-mentioned through hole (11a) is a hole through which a suture (A1) connected to an anchor (A) embedded within the wound tissue (W) of the human body passes. Various surgical tools required for the procedure can be inserted into the skin (S) through this through hole (11a).

[0025] The inner support plate (12) extends horizontally from one end of the body (11) and is formed to have a diameter larger than the body (11), and is in close contact with the inside of the skin (S).

[0026] The above outer support plate (13) is formed to have the same diameter as the inner support plate (12) by extending horizontally from the other end of the body (11), and is in close contact with the outside of the skin (S).

[0027]

[0028] The above cannula (20) is inserted into the passage hole (11a) of the gateway (10), has a pipe shape with the top and bottom open, and is provided with a fluid supply pipe (21) on the upper side for supplying fluid to the wound tissue (W).

[0029] The above fluid supply pipe (21) is provided on the outside of the skin (S) when the cannula (20) is inserted into the passage hole (11a) of the gateway (10), and a valve (22) is installed therein.

[0030] The above valve (22) blocks or opens the fluid supply pipe (21) to allow fluid to be supplied into the cannula (20) through the fluid supply pipe (21) or to block the fluid from being supplied.

[0031] When performing a procedure, the inside of the skin (S) is mixed with blood or living tissue, which makes the field of view of the arthroscope poor. At this time, if a fluid such as water is supplied into the inside of the skin (S) through the fluid supply tube (21), the fluid, including the blood or living tissue, flows out of the skin, thereby improving the field of view.

[0032] Meanwhile, a cap (23) made of an elastic material is installed on the top of the cannula (20) to minimize fluid leakage to the outside through the top of the cannula (20) when fluid is supplied into the cannula (20) through the fluid supply pipe (21).

[0033] A microhole (23a) is formed in this cap (23), and the trocar needle (30) is inserted into the cannula (20) by penetrating the microhole (23a) of the cap (23).

[0034] Since the cap (23) is made of an elastic material, when the trocar (30) is inserted through the microhole (23a), the cap (23) comes into close contact with the trocar (30), and even if the trocar (30) is removed from the cap (23), the cap (23) around the microhole (23a) gathers again due to the elasticity of the cap (23) itself, so the microhole (23a) remains in a state of having a very small diameter.

[0035] Therefore, when supplying fluid through the fluid supply pipe (21), the amount of fluid flowing out through the micro-hole (23a) of the cap (23) is small.

[0036]

[0037] The above trocar (30) is inserted into the cannula (20), and the lower part is formed to be sharp and protrudes toward the wound tissue (W) through the cannula (20). Since the trocar (30) is longer than the cannula (20), the lower part protrudes outside the cannula (20), and the lower part of the trocar (30) is moved to spread the graft (T).

[0038] In addition, since the tip of the trocar (30) is formed to be sharp, it can easily penetrate the living tissue in the middle when reaching the graft (T).

[0039]

[0040] The usage of the cannula assembly of the present invention configured as described above is briefly described as follows.

[0041] A number of sutures (A1) provided on anchors (A) embedded in the wound tissue (W) of the skin (S) are passed through the through hole (11a) while the gateway (10) is pushed into the skin (S) through the incised area of ​​the skin.

[0042] When the gateway (10) is pushed into the skin (S) in this way, the inner support plate (12) is pressed against the inside of the skin (S), and the outer support plate (13) is pressed against the outside of the skin (S).

[0043] And, when a plurality of sutures (A1) are exposed outside the skin (S) through the passage hole (11a) of the gateway (10), the exposed plurality of sutures (A1) pass through the edge of the graft (T) to be transplanted into the wound tissue (W).

[0044] When this condition is achieved, the surgeon uses a tool to push the graft (T) into the skin (S) through the passage hole (11a) of the gateway (10) and attach it to the wound tissue (W). Therefore, the suture (A1) acts as a guide to guide the graft (T) when pushing it into the skin.

[0045] After the graft (T) is inserted into the skin, the cannula (20) is pushed into the skin (S) through the passage hole (11a) of the gateway (10). As the cannula (20) passes through the passage hole (11a) of the gateway (10), the suture connected to the anchor (A) is positioned between the gateway (10) and the cannula (20).

[0046] And, since the area of ​​the graft (T) is larger than the diameter of the passage hole (11a) of the gateway (10), the graft (T) becomes considerably crumpled as it passes through the passage hole (11a), so the trocar (30) is inserted into the cannula (20) and the graft (T) is pressed with the tip of the trocar (30) to flatten the graft (T).

[0047] When the graft (T) is sufficiently expanded, the trocar (30) is removed from the cannula (20), and if the view inside the skin (S) through the arthroscope is not good, fluid is supplied into the skin (S) through the fluid supply tube (21) so that the things that are obscuring the view are washed away and discharged to the outside through the incision site of the skin (S) formed around it.

[0048] In this state, the cannula (20) is removed from the gateway (10), and finishing work including tying a knot of the suture (A1) is performed so that the graft (T) adheres closely to the wound tissue (W), and then the suture (A1) is cut and the gateway (10) is removed, thereby completing the graft (T) procedure.

Claims

1. A gateway (10) having a central hole (11a) through which a suture (A1) connected to an anchor (A) embedded in the wound tissue (W) of a human body passes, and which is inserted and fixed inside the human body through the incised skin (S); A cannula (20) inserted into the passage hole (11a) of the gateway (10) and having a fluid supply tube (21) provided on the outside of the skin (S) to supply fluid to the wound tissue (W); A cannula assembly characterized by comprising a trocar (30) inserted into the cannula (20) and having a lower portion protruding toward the wound tissue (W) through the cannula (20).

2. In claim 1, A cap (23) made of elastic material is installed on the upper part of the above cannula (20), and a micro hole (23a) is formed in the cap (23). A cannula assembly characterized in that the above-mentioned trocar needle (30) penetrates the micro-hole (23a) of the above-mentioned cap (23) and is inserted into the inside of the cannula (20).

3. In claim 1, A cannula assembly characterized in that a valve (22) is installed in the fluid supply pipe (21) of the above cannula (20).

4. In claim 1, A cannula assembly characterized in that the suture (A1) exposed outside the skin (S) through the passage hole (11a) of the gateway (10) passes through the edge of the graft (T) to be transplanted into the wound tissue (W), and then acts as a guide when the graft (T) is pushed into the skin (S) through the passage hole (11a) of the gateway (10) and attached to the wound tissue (W).

5. In claim 1, A cannula assembly characterized in that when the cannula (20) passes through the passage hole (11a) of the gateway (10), the suture (A1) is positioned between the gateway (10) and the cannula (20).

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