TWI642403B - Puncture sleeve - Google Patents

Abstract

A puncture sleeve includes a trocar filler, a trocar sleeve, and a sealing body. The trocar sleeve includes a trocar cannula and a trocar housing assembled with the trocar cannula, the sealing body being received in the trocar housing, the sealing body including a There is a hollow annular portion and a plurality of sealing portions connected to one of the circumferences of the annular portion and extending away from the hollow. a folding edge is formed between the annular portion and the sealing portion, and the sealing portion is folded toward the hollow portion and partially overlapped with each other to form an eyelet for the trocar filler to penetrate. According to this, excellent sealing properties are provided.

Description

Puncture sleeve

The invention relates to a puncture sleeve, in particular to a high sealing puncture sleeve.

With the ever-changing technology, surgery is no longer necessary to use a scalpel to open the body in order to perform surgery. According to the nature of the lesion, minimally invasive surgery can be performed, so that the surgeon can avoid causing huge wounds in the patient. All abdominal surgery and thoracic surgery are the scope of minimally invasive surgery. Among them, in minimally invasive surgery, the most important instrument is the puncture sleeve, which usually contains two main components, a trocar sleeve and a trocar filler.

In operation, a small incision is made in the patient, and the trocar filler is inserted into the trocar sleeve, and the trocar cannula is guided through the skin into the body cavity of the human body for surgery.

In minimally invasive surgery, carbon dioxide gas is usually filled into the body cavity, and pressure is applied to the body cavity to increase the space for surgery. Therefore, the structural tightness and tightness of the puncture sleeve are important and will affect the success of the operation.

For a related art, reference may be made to U.S. Patent No. 7,597,701, U.S. Patent No. 7,677,392, U.S. Patent No. 7,785,294, U.S. Pat. No. 6,206,411, No. U.S. No. 486,241 and U.S. Patent Publication No. US20050070947A1, the aforementioned priors all disclose the puncture sleeve for performing minimally invasive surgery, but there is still room for improvement.

The main object of the present invention is to solve the problem of poor sealing performance of the sealing mechanism of the puncture sleeve in the prior art.

In order to achieve the above object, the present invention provides a puncture sleeve comprising a trocar filler; a trocar sleeve for sliding axially through the trocar filler, the trocar sleeve comprising a a trocar cannula and a trocar housing coupled to the trocar cannula, the trocar cannula including a first open end coupled to the trocar housing and a first away from the first a second open end of the open end, the line connecting the first open end and the second open end forms an axis extending away from the first open end and the second open end; and a sealing body The sealing body is disposed in the trocar housing, the sealing body includes a sealing portion having a hollow annular portion and a plurality of sealing portions connected to a circumference of the annular portion and extending away from the hollow portion, wherein the sealing portion A folding edge is formed between the annular portion and the sealing portion, and the sealing portion is folded toward the hollow portion and partially overlapped with each other to form an eyelet for the trocar filler to penetrate.

Accordingly, the sealed body of the present invention is folded inwardly and partially overlapped with each other to form a check valve structure, so that the trocar filler does not lose the property of preventing gas leakage when traversing. The operation still maintains a certain space in the body cavity during the operation to facilitate the operation.

10‧‧‧ trocar filling device

20‧‧‧ trocar sleeve

21‧‧‧ trocar cannula

21a‧‧‧First open end

21b‧‧‧ second open end

21c‧‧‧ lumen

22‧‧‧ trocar housing

23‧‧‧ outer surface

221‧‧‧Part 1

222‧‧‧ Part II

2211‧‧‧First torus

2212‧‧‧First locking structure

2213‧‧‧ Positioning block

2221‧‧‧second torus

2222‧‧‧Second locking structure

2223‧‧‧stop block

2224‧‧‧Opening

30‧‧‧Sealing components

31‧‧‧Upper cover

32‧‧‧Base

32a‧‧‧ Groove

32b‧‧‧ slitting

32c‧‧‧Tilt angle

40‧‧‧ Sealing body

41‧‧‧Rings

411‧‧‧ hollow

412‧‧‧ positioning hole

413‧‧‧ first side

414‧‧‧ second side

42‧‧‧ Sealing Department

42a‧‧‧First seal

421‧‧‧ outer edge

421a‧‧‧First outer edge

4211a, 4211b, 4211c, 4211d‧‧‧ first underlay

4212a, 4212b, 4212c, 4212d‧‧‧ second underlay

422‧‧‧ Sealing film

422a‧‧‧first sealing sheet

423‧‧‧ positioning hole

423a‧‧‧First positioning hole

42b‧‧‧Second seal

421b‧‧‧second outer edge

422b‧‧‧second sealing sheet

423b‧‧‧Second lower positioning hole

42c‧‧‧third seal

421c‧‧‧ third outer edge

422c‧‧‧third sealing sheet

423c‧‧‧3rd positioning hole

42d‧‧‧fourth seal

421d‧‧‧fourth outer edge

422d‧‧‧four sealing sheet

423d‧‧‧4nd positioning hole

43‧‧‧Connecting Department

44‧‧‧Folding edge

45‧‧‧ eye hole

50‧‧‧Pneumatic valve

51‧‧‧ valve stem

52‧‧‧ Fluid opening

53‧‧‧Top opening

54‧‧‧Connectors

D ₁ ‧‧‧The distance from the positioning block to the axis

D ₂ ‧‧‧Distance of the first locking structure to the shaft center

D ₃ ‧‧‧ Distance from the stop block to the axis

D ₄ ‧‧‧The distance from the second locking structure to the shaft center

S _a , S _b , S _c , S _d ‧ ‧ 差

X‧‧‧Axis

FIG. 1A is a schematic perspective view of an embodiment of a puncture sleeve according to the present invention.

Fig. 1B is a schematic cross-sectional view taken along line A-A of Fig. 1A.

FIG. 2 is an exploded perspective view of an embodiment of the present puncture sleeve.

FIG. 3A and FIG. 3B are schematic diagrams showing the locking of the trocar housing in an embodiment of the creation of the puncture sleeve.

FIG. 4A and FIG. 4B are schematic views showing the locking of the trocar housing in another embodiment of the creation puncture sleeve.

FIG. 5 is a schematic perspective view of the sealing body of the embodiment of the puncture sleeve.

FIG. 6 is a schematic plan view of the sealing body of the embodiment of the puncture sleeve.

FIG. 7 is a schematic view of the sealed body of the embodiment of the puncture sleeve according to the present invention.

FIG. 8 is a schematic perspective view of the sealing body of another embodiment of the creation puncture sleeve.

Fig. 9 is a side view showing the sealing body of another embodiment of the creation puncture sleeve.

The detailed description and technical content of this creation are as follows: The creation is a puncture sleeve 10. Please refer to Figure 1A, Figure 1B and Figure 2 for the creation of the puncture set. A schematic perspective view of an embodiment of the cartridge, a cross-sectional view along the AA direction of FIG. 1A, and an exploded view of an embodiment of the present puncture sleeve, the puncture sleeve mainly comprising a trocar obturator 10 a trocar sleeve 20, a seal assembly 30, a sealing body 40, and a piston valve 50 for sliding the trocar filler 10 along the trocar Axial through.

The trocar sleeve 20 includes a trocar cannula 21 and a trocar housing 22 assembled with the trocar cannula 21, the trocar cannula 21 The first open end 21a, the second open end 21b, and the inner cavity 21c are connected to the trocar housing 22, and the second open end 21b is away from the first open end. 21a, a hollow tube body is defined between the first open end 21a and the second open end 21b to define the inner cavity 21c. In an embodiment, an outer surface 23 of the trocar cannula 21 can form a threaded structure or a rough structure to prevent the trocar cannula 21 from falling off while preventing the trocar cannula 21 from being operated during surgery. It is pushed in.

In one embodiment of the present invention, the trocar housing 22 includes a first portion 221 and a second portion 222. Those skilled in the art will appreciate that the tight coupling of the first portion 221 and the second portion 222 of the trocar housing 22 is an important factor when inserting the trocar sleeve 20 into a human body. The portion 221 and the second portion 222 are loosened during surgery and will present a certain degree of risk.

The first portion 221 includes a first annular surface 2211, a first locking structure 2212, and a positioning block 2213. The first locking structure 2212 radially protrudes outwardly from the first annular surface 2211. The positioning block 2213 protrudes. The first locking structure 2212. The second portion 222 includes a second annular surface 2221, a second locking structure 2222, a blocking block 2223, and an opening 2224. The second locking structure 2222 protrudes radially inwardly from the second toroid. 2221, the stopper 2223 is axially protruded. In the embodiment, the stopper 2223 is an axially protruding cylinder. Please refer to FIG. 3A and FIG. 3B for a schematic diagram of locking the trocar housing 22 in an embodiment of the present invention. The second portion 222 has a rotational trajectory relative to the first portion 221. The blocking block 2223 of the second portion 222 is forced to elastically straddle from the side of the positioning block 2213 to the other side of the rotation trajectory by the positioning block 2213 to make the first portion 221 and the second portion The portions 222 are fixed to each other. In addition, referring to FIG. 4A and FIG. 4B , in another embodiment of the present puncture sleeve, the trocar housing 22 is locked. In the embodiment, the blocking block 2223 is divided by the shaft. In addition to the ground protrusion, a second retaining wall is formed by extending radially from the second annular surface 2221.

In this embodiment, the first locking structure 2212 and the second locking structure 2222 are screwed together, and are relatively rotated according to the rotation trajectory (as indicated by the direction of the arrow), and are rotated to the positioning block 2213 and the blocking block. After the two rotations are continued, the stop block 2223 is forced to elastically extend from the side of the positioning block 2213 to the other side, so that the positioning block 2213 and the stop block 2223 are oppositely fixed. The locking of the portion 221 and the second portion 222 is more fixed to each other, and through the positioning block 2213 and the setting of the blocking block 2223, the user feels that the blocking block 2223 is blocked and crosses when rotating. After the positioning block 2213, it will also be known that the first portion 221 and the second portion 222 have been locked. In one embodiment, the distance from the positioning block 2213 to the axis X is D ₁ , and the distance from the first locking structure 2212 to the axis X is D ₂ , and D _{1 is} greater than D ₂ . The distance from the block 2223 to the axis X is D ₃ , the distance from the second locking structure 2222 to the axis X is D ₄ , and D _{3 is} greater than D ₄ .

According to this, in addition to the first locking structure 2212 and the second locking structure 2222 are mutually screwed to achieve mutual locking, the positioning block 2213 and the blocking block 2223 are mutually abutted against each other. During the operation of the operator, it is not easy for the first portion 221 and the second portion 222 to loosen, and the surgical procedure is not smooth, and even dangerous situations occur. And this special design is not complicated to use, and the locking effect can be achieved by simple operation means.

The sealing member 30 includes an upper cover 31 and a base 32. The base 32 has a recess 32a and a slot 32b. The upper cover 31 is fitted to the recess 32a. The upper cover 31 and the base 32 may be made of an elastic body. . In an embodiment, as shown in FIG. 1B, the base 32 has a duckbill shape and has an inclined angle 32c.

The piston valve 50 is coupled to the first portion 221 of the trocar housing 22 and includes a valve stem 51, a fluid opening 52, a top opening 53, and a joint 54.

Please refer to FIG. 4, FIG. 5 and FIG. 6 respectively, which are respectively a perspective view of the sealing body 40 of the embodiment of the puncture sleeve, a schematic plan view of the sealing body 40, and a plan view of the sealing body 40 after folding. The sealing body 40 is placed between the upper cover 31 and the base 32, and is pressed into the recess 32a by the upper cover 31. The sealing body 40 includes an annular portion 41, a plurality of sealing portions 42, and a plurality of a connecting portion 43 connected between the annular portion 41 and the sealing portion 42 and a plurality of folding edges 44 formed between the annular portion 41 and the sealing portion 42. The annular portion 41 has a hollow 411. A first side 413 and a second side 414 away from the first side 413 are connected to a circumference of one of the annular portions 41 and extend outward in a radial direction away from the hollow 411. In this creation The annular portion 41, the sealing portion 42, and the connecting portion 43 are integrally formed in a continuous structure. The annular portion 41 is formed with a plurality of upper positioning holes 412 provided in the circumferential direction.

The sealing portion 42 has an outer edge portion 421 and a sealing piece 422 respectively connected to the circumference of the outer edge portion 421. The sealing sheet 422 forms a partial tapered surface, and the outer edge portion 421 has a width of 180 degrees. To the circumference between 270 degrees, in the present embodiment, the circumference is between 200 degrees and 230 degrees, and the outer edge portion 421 is formed with a plurality of lower positioning holes 423 disposed in the circumferential direction. In use, the sealing portion 42 is disposed in the clockwise or counterclockwise order with the folding edge 44 toward the hollow 411 by the folding edge 44 between the annular portion 41 and the sealing portion 42. The top surface of the outer edge portion 421 of the sealing portion 42 is attached to the first side 413 of the annular portion 41 and partially overlapped to form a structure as shown in FIG. An eyelet 45 is formed in the sealing body 40, and the eyelet 45 is elastically expandable for the trocar filler 10 to penetrate. After folding, the lower positioning hole 423 of the outer edge portion 421 of the sealing portion 42 and the upper positioning hole 412 of the annular portion 41 are aligned with each other. Referring to FIG. 1B and FIG. 2, the sealing body 40 of FIG. 5 is inverted and folded into the sealing member 30, that is, the upper cover 31 is pressed against the ring. The second side 414 of the portion 41 and the bottom surface of the outer edge portion 421 in FIG. 5 are pressed against the base 32.

Accordingly, since the sealing body 40 adopts an integrally formed folded structure design, the precision in assembly can be superior to that of the independent blade-shaped sealing member, and the assembly time and the mismatch caused by human factors can be greatly reduced; In addition, because it is integrally formed, it is more convenient and quick to manufacture, and the cost is reduced.

In this embodiment, the number of the sealing portions 42 is four, as shown in FIG. 6 , including a first sealing portion 42 a , a second sealing portion 42 b , a third sealing portion 42 c and a fourth sealing portion. 42d, the sealing portion 42 is equidistantly connected to the annular portion 41 at positions of 0, 90, 180, and 270 degrees in the circumferential direction by the connecting portion 43, however, the creation is not limited thereto. In other embodiments, the number of the sealing portions 42 may also be other options. The first sealing portion 42a has a first outer edge portion 421a, a first sealing piece 422a and a first lower positioning hole 423a, the second sealing portion 42b has a second outer edge portion 421b, a second sealing piece 422b and a second lower positioning hole 423b, the third The sealing portion 42c has a third outer edge portion 421c, a third sealing piece 422c and a third lower positioning hole 423c. The fourth sealing portion 42d has a fourth outer edge portion 421d, a fourth sealing piece 422d and a The fourth lower positioning hole 423d.

In an embodiment, the first outer edge segment 421a has a substantially uniform and uniform thickness, and the second outer edge segment 421b, the third outer edge segment 421c, and the fourth outer edge segment 421d are the same. "Figure 5" is shown. Please refer to FIG. 8 , which is a schematic perspective view of a sealing body 40 according to another embodiment of the present invention. In another embodiment, the outer edge portion 421 of the sealing portion 42 includes a first lower liner. a pad and a second lower pad continuous with the first lower pad, a difference formed between the first lower pad and the second lower pad, the difference being generated in a ring direction, the step being Means a thickness difference between the first lower liner and the second lower liner. In this embodiment, the first lower liner and the second lower liner are equal in thickness and equal in arc length, and the step difference is between about 0.8 and 1.2 of the thickness. As shown in FIG. 8, the first sealing portion 42a, the second sealing portion 42b, the third sealing portion 42c, and the fourth sealing portion 42d each include a first lower liner 4211a, 4211b, 4211c, 4211d. And a second lower liner 4212a, 4212b, 4212c, 4212d, in the embodiment, the first lower liner 4211a, 4211b, 4211c, 4211d and the arc of the second lower liner 4212a, 4212b, 4212c, 4212d The lengths are equal and the thicknesses are equal. Further, the first lower pads 4211a, 4211b, 4211c, 4211d and the step differences S _a , S _b , S _c formed between the second lower pads 4212a, 4212b, 4212c, 4212d The height of S _d is equivalent to the thickness of the lower liner, but the invention is not limited thereto. In other aspects, the thickness, arc length or step difference of the lower liner may be different from each other depending on the demand.

Based on the design of the step, the outer edge segments 421 can be better adhered to each other after the adjacent sealing portions 42 are folded, as shown in FIG. 9 , which is another embodiment of the creation puncture sleeve. A side view of the sealing body 40. When folded, the first sealing portion 42a, the second sealing portion 42b, the third sealing portion 42c, and the fourth sealing portion 42d are sequentially folded. When the first sealing portion 42a is folded inward, the first lower pad 421a is attached to the second side 414 of the annular portion 41, and then, when the second sealing portion 42b is folded, the first lower liner pad 4211b is also attached to the second side 414 of the annular portion 41, and the second lower pad 4212b due to the level difference S _b and put it on the first lower pad 4211a. However, in other embodiments, the design of the step difference can also be applied to other seals that are stacked on top of one another and are structurally independent.

Accordingly, the size design that compensates for the thickness at the outer edge of the single sealing portion 42 can effectively solve the problem that the sealing portions 42 are partially overlapped with each other, and uneven thickness is generated at the outer edge of the sealing body 40. The problem of poor sealing. In addition, since the sealing property of the sealing body 40 is better than the conventional one, it is possible to eliminate the need for too many positioning holes. In the above embodiment, the number of the upper positioning holes 412 is only eight, which is less than that of the conventional sealing body. 16 positioning holes, only half.

The present invention has been described in detail above, but the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention. That is, the equivalent changes and modifications made by the scope of the present application should remain within the scope of the patent of the present invention.

Claims (6)

A puncture sleeve comprising: a trocar filler; a trocar sleeve for sliding axially through the trocar filler, the trocar sleeve comprising a trocar cannula and a a trocar housing coupled to the trocar cannula, the trocar cannula including a first open end coupled to the trocar housing and a second open end remote from the first open end The first open end and the second open end form an axis extending from the first open end and the second open end; and a sealing body, the sealing body is received in the sleeve In the needle housing, the sealing body includes a hollow annular portion and a plurality of sealing portions connected to a circumference of one of the annular portions and extending away from the hollow, the annular portion and the sealing portion being one An integrally formed continuous structure, wherein a folded edge is formed between the annular portion and the sealing portion, and the sealing portion is folded toward the hollow portion and partially overlapped with each other to form a trocar An eyelet penetrated by the filler; wherein the sealing portion has an outer edge portion, the seal Further having a seal attached to a circumference of an outer edge section of the sheet, the sealing sheet is formed tapered surface portion. The puncture sleeve of claim 1, wherein the sealing portion respectively includes an overlapping portion that is partially overlapped with the adjacent sealing portion. The puncture sleeve of claim 1, wherein the sealing portion has an outer edge portion having a circumference between 180 degrees and 270 degrees. The puncture sleeve of claim 1, wherein the sealing body further comprises a plurality of connecting portions disposed between the annular portion and the sealing portion, the connecting portion being connected to the annular portion along the circumference Positions of 0, 90, 180 and 270 degrees in the direction. The puncture sleeve according to the first aspect of the invention, wherein the annular portion has a plurality of upper positioning holes disposed in a circumferential direction, the sealing portion having a plurality of positioning holes facing the hollow inner portion and the upper positioning hole Lower positioning holes aligned with each other. The puncture sleeve of claim 3, wherein the outer edge portion of at least one of the sealing portions is formed with a difference to compensate for a thickness mismatch caused by the sealing portions being partially overlapped with each other.