CN113616258A - Suture cutting tool used with minimally invasive surgical instrument - Google Patents

Abstract

Translated fromChinese

本发明提供一种配合微创手术器械使用的缝线切割刀具，其本体有相通的扣孔和侧开口，用于扣住微创手术器械的杆体，本体于扣孔穿设方向的两端分别具有端缘与侧缘，本体在端缘或侧缘设有切割部，本体在扣住杆体后可服贴定位并和杆体合体而连动操作，手术缝合后过剩的缝线可从本体和杆体之间被导入至切割部，并移动杆体而切断缝线，借此构成本发明。

The invention provides a suture cutting tool for use with minimally invasive surgical instruments. It has an end edge and a side edge. The body is provided with a cutting part on the end edge or side edge. After the body is buckled, the body can be positioned obediently and combined with the rod body for interlocking operation. The present invention is constituted by being introduced into the cutting portion and moving the rod body to cut the suture.

Description

Suture cutting tool used with minimally invasive surgical instrument

Technical Field

The invention relates to a surgical instrument, in particular to a suture cutting tool matched with a minimally invasive surgical instrument.

Background

In the process of minimally invasive surgery, only a plurality of small-hole-shaped wounds are required to be formed on a patient body, the minimally invasive surgical instrument can extend into the patient body, a surgeon can clearly see an affected part to perform the surgery by matching with an endoscope and an imaging technology, and the minimally invasive surgery is quite popular in the current stage.

When a minimally invasive surgery is performed, a surgeon must rely on the use of a minimally invasive surgical instrument, taking gastrointestinal wound suturing in the surgery as an example, the surgeon generally creates three small-hole-shaped wounds on a patient, wherein two wounds are that a minimally invasive needle holder enters the patient to hold a needle for suturing, and the other wound is that an endoscope (including illumination) enters the patient to read an image of an affected part, and after the suturing is completed, one method is to draw out one of the minimally invasive needle holders and replace the minimally invasive instrument with a thread cutting function to enter the patient to cut off the rest of threads, which can cause the delay of the surgery time; in another method, a small hole-shaped wound is formed on the patient, a minimally invasive instrument with the function of trimming the suture enters the patient to cut off the residual suture, but the method inevitably generates more wounds on the patient.

Therefore, how to solve the problem of the minimally invasive surgery is the main focus of the invention.

Disclosure of Invention

To solve the above problems, the present invention provides a suture cutting tool used in conjunction with a minimally invasive surgical instrument, which can be fastened to an original minimally invasive surgical instrument to increase the function of cutting a surgical suture.

An embodiment of the present invention provides a suture cutting tool, which can be fastened to a minimally invasive surgical instrument, wherein the minimally invasive surgical instrument includes a rod body having an operation portion and an actuation portion at both ends thereof, and an operator can hold the operation portion with his/her hand and extend the rod body with the end having the actuation portion into a patient's body to perform a suture operation, the suture cutting tool includes a body having a fastening hole formed therethrough in an axial direction and having a side opening formed in a radial direction, the side opening being communicated with the fastening hole, the body having end edges at both ends thereof in a direction in which the fastening hole is formed, the body having side edges at both sides of the side opening, the body having a cutting portion at least one of the two end edges and the two side edges, the rod body being fastened into the fastening hole through the side opening so that the body fits the positioning rod body, and an excess suture after the suture operation can be guided to the cutting portion between the body and the rod body, and moving the rod to cut the suture.

Preferably, the body is C-shaped and straight cylindrical, and the range covered by the body when the rod body is positioned exceeds half of the rod face of the rod body.

Preferably, both end edges and both side edges have rounded lead angles.

Preferably, the cutting portion is disposed at least one of the two end edges, and the cutting portion is located near the side opening.

Preferably, the cutting parts are arranged at two positions of the body, and the cutting parts at the two positions are symmetrical in position at the arranged end edges and are respectively close to the two side edges of the side opening.

Preferably, the cutting portion is disposed at least one of the two side edges, and the cutting portion is located near an end edge of one end of the body.

Preferably, the body has two cutting portions, and the two cutting portions are symmetrically arranged at the side edges and respectively close to the end edges of one end of the body.

Preferably, the cutting portion is disposed at an end edge or a side edge of the body and has an inner inclined surface and an outer inclined surface, and a blade portion is formed between the inner inclined surface and the outer inclined surface.

Preferably, the body has cutting portions at two locations, one of the cutting portions is disposed at one of the two end edges and is located near the side opening, and the other cutting portion is disposed at one of the two side edges and is located near the end edge at one end of the body.

Preferably, the body is integrally formed, and the cutting portion is U-shaped.

Therefore, in the process of performing minimally invasive surgery, the suture cutting tool can be arranged on the minimally invasive surgical instrument before the minimally invasive surgical instrument extends into the body of a patient, the suture cutting tool is positioned on the rod body of the minimally invasive surgical instrument in a fitting manner, so that the tissue in the body cannot be damaged when the minimally invasive surgical instrument is operated in the body, when the surgery is completed and the suture needs to be cut off, the suture can be cut off by only guiding the surplus suture into the cutting part from the position between the body and the rod body and moving the rod body, and the suture and suture cutting-off operation can be performed by the same minimally invasive surgical instrument, so that the effects that the completion speed of the minimally invasive surgery can be increased and the wound is not increased are achieved.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic view of a first embodiment of the present invention in a state of use in which a suture cutting blade is attached to a minimally invasive surgical instrument.

FIG. 2 is a schematic view of the installation of a suture cutting blade in a minimally invasive surgical instrument according to a first embodiment of the present invention.

Fig. 3 is a perspective external view of the suture cutting knife according to the first embodiment of the present invention.

Fig. 4 is a sectional configuration view of the suture cutting tool of the first embodiment of the present invention.

FIG. 5 is a schematic top view of a first embodiment of a suture cutting blade mounted to a shaft of a minimally invasive surgical instrument.

Fig. 6 is a schematic view showing a state in which the suture cutting blade according to the first embodiment of the present invention is used when it is attached to a shaft of a minimally invasive surgical instrument, and the suture is cut by a cutting portion provided at a leading end edge.

FIG. 7 is an illustration of the suture of FIG. 6 being withdrawn rearwardly of the shaft of the minimally invasive surgical instrument and severed by the lead-in cutting portion.

Fig. 8 is a perspective external view of a suture cutting knife according to a second embodiment of the present invention.

FIG. 9 is a schematic view of a second embodiment of the present invention showing a suture cutting blade in use mounted on a shaft of a minimally invasive surgical instrument, wherein a suture is introduced into a cutting portion provided at a side edge thereof to be cut.

FIG. 10 is an illustration of the suture of FIG. 9 being withdrawn from the shaft of the minimally invasive surgical device and severed by the lead-in cutting portion.

Fig. 11 is a perspective external view of a suture cutting tool according to a third embodiment of the present invention.

Fig. 12 is a perspective external view of a suture cutting tool according to a fourth embodiment of the present invention.

Fig. 13 is a perspective external view of a suture cutting tool according to a fifth embodiment of the present invention.

Detailed Description

To facilitate the explanation of the present invention, the central ideas shown in the above summary are shown in the following embodiments. Various objects in the embodiments are depicted in terms of suitable illustrative proportions, dimensions, deformations, or displacements, rather than in terms of actual components, as previously described.

Referring to fig. 1 to 13, the present invention provides a suture cutting tool used in conjunction with a minimally invasive surgical instrument, the minimally invasivesurgical instrument 100 is arod 101, and two ends of therod 101 are respectively provided with amanipulation part 102 and anactuation part 103, an operator can hold themanipulation part 102 by hand and extend one end of therod 101 having theactuation part 103 into a patient for performing an operation. The following is a first embodiment, in which theinstrument 100 is a minimally invasive surgical needle holder, and the actuatingportion 103 is used to hold a needle to pull a suture thread to suture a wound.

The suture cutting tool comprises abody 10, thebody 10 is integrally formed in the embodiment, and is provided with abuckling hole 11 and a side opening 12, thebuckling hole 11 penetrates through thebody 10 along the axial direction, theside opening 12 is formed in the radial direction of thebody 10, and theside opening 12 is communicated with thebuckling hole 11. Thebody 10 has twoend edges 13 and twoside edges 14, the twoend edges 13 are at two ends of thebody 10 in the direction of the throughhole 11, and the twoside edges 14 are at two sides of thebody 10 at the side opening 12.

Thebody 10 has acut 15, and thecut 15 may be at least one of the twoside edges 13 or at least one of the twoside edges 14. In a preferred embodiment, thebody 10 is C-shaped and has a straight cylindrical shape, and the twoend edges 13 and the twoside edges 14 have arc-shaped lead angles, but not limited thereto. As shown in fig. 5, thebody 10 is positioned on therod 101 of theinstrument 100 for minimally invasive surgery, wherein thebody 10 covers a range exceeding half of the rod 101 (i.e. the length of the circumference of the rod 101) when therod 101 is positioned, so that thebody 10 can be stably positioned on therod 101 and is not easy to fall off.

Thecutting portion 15 has two positions in themain body 10 in the embodiment, in the first embodiment, the twocutting portions 15 are disposed on oneend edge 13, the twocutting portions 15 are symmetrical in position on the disposedend edge 13, and the twocutting portions 15 are respectively close to the twoside edges 14 of the side opening 12. Thecutting portion 15 of the present embodiment is U-shaped, and has an innerinclined surface 151 and an outerinclined surface 152 at theend edge 13 of thebody 10, and asharp blade portion 153 is formed between the innerinclined surface 151 and the outerinclined surface 152. As shown in fig. 5, when thebody 10 is positioned on therod 101, theend edge 13 and the twoside edges 14 have arc-shaped lead angles, so that a gap C is left between thebody 10 and therod 101, and a suture can easily extend into the gap C between thebody 10 and therod 101, so as to be guided into thecutting portion 15.

When thebody 10 of the suture cutting tool is to be installed on therod body 101 of the minimally invasivesurgical instrument 100, thebody 101 is fastened into thefastening hole 11 through the side opening 12 of thebody 10 at a position where therod body 101 is adjacent to the actuatingportion 103, and at this time, thebody 10 can be closely positioned on therod body 101, and during the operation, thebody 10 can extend into the body of the patient along with one end of therod body 101 having the actuatingportion 103. When thebody 10 is positioned on therod 101, it is customary to install thecutting portion 15 in a direction away from the actuatingportion 103, and when thecutting portion 15 cuts the suture, therod 101 is pulled back out.

As shown in fig. 6, after completing the suturing operation of the twoinstruments 100 for minimally invasive surgery on the wound a in the patient with the suture B, the operator can clamp the remaining suture B with the actuatingportion 103 of oneinstrument 100 for minimally invasive surgery, and introduce the suture B into thecutting portion 15 from between thebody 10 and therod 101 of theother instrument 100 for minimally invasive surgery, and then the operator only needs to draw out theinstrument 100 for minimally invasive surgery backwards, so as to move therod 101 to face the suture B with thecutting portion 15, and cut off the suture B as shown in fig. 7, thereby completing the suturing operation of the wound a.

The characteristics of the invention can be easily found from the above description:

1. the invention relates to a suture cutting tool, which is specifically improved by matching with the original functions of a minimally invasive surgical instrument, belongs to an additional surgical instrument with deep design functions, and can be arranged on any minimally invasive surgical instrument with a rod body. In the process of performing minimally invasive surgery, before the minimally invasivesurgical instrument 100 extends into a patient body, thebody 10 can be arranged on therod body 101 close to the actuatingpart 103, the function of the minimally invasive surgical instrument is like that of a surgical scissors, redundant suture B can be cut off after the wound suturing action is completed, and compared with the mode that the existing scissors are required to be replaced to enter an affected part and then taken out after the suture B is cut off, the minimally invasivesurgical instrument 100 can perform suturing and suture B cutting operations together by using the same minimally invasivesurgical instrument 100 originally in the patient body, the minimally invasive surgical instrument can achieve the effect of accelerating the completion speed of the minimally invasive surgery without increasing the wound.

2. Because thebody 10 is positioned on therod 101 of the minimally invasivesurgical instrument 100 in a snug manner, thebody 10 is coupled with therod 101, i.e., thecutting part 15 is adjacent to the surface of therod 101 and is not protruded outside, thebody 10 will not damage the internal tissues of the patient during the operation of the minimally invasivesurgical instrument 100.

3. When the operation is completed, the excessive suture B is only needed to be guided into the cuttingpart 15 from the space between thebody 10 and therod body 101, and then therod body 101 is moved, so that thebody 10 is carried with the cuttingpart 15 to cut off the suture B, wherein therod body 101 is moved backwards in the drawing direction to cut off the suture B, thereby avoiding the tissues around the affected part from being accidentally injured.

4. The symmetrical design of the cuttingportions 15 at two positions of thesame body 10 can make the operator select the cuttingportion 15 with a better direction to cut the suture during the operation, so that the cutting action of the suture B is more convenient.

5. Thebody 10 can be detached from therod body 101 after being positioned on therod body 101, so that thebody 10 can be sterilized under high pressure and can also be designed to be disposable, i.e. the body can be discarded after being used once, so as to take the sanitation and safety of the operation process into consideration.

6. Thebody 10 has a cuttingportion 15 designed to cut off the adherent tissue when necessary in addition to cutting off the suture B, thereby enhancing the utility of the present invention.

The present invention still has different embodiments, as shown in fig. 8 to 10, which is a suture cutting tool according to the second embodiment of the present invention, and it has abody 10, and also has abutton hole 11, aside opening 12, twoend edges 13, twoside edges 14 and two cuttingportions 15, as with the first embodiment, but the main difference from the first embodiment is that the two cuttingportions 15 of the present embodiment are disposed one on theend edge 13 and the other on theside edge 14, wherein the cuttingportion 15 disposed on theend edge 13 is located close to theside opening 12, the other cuttingportion 15 disposed on theside edge 14 is located close to theend edge 13 at one end of thebody 10, and the two cuttingportions 15 are disposed on thebody 10 at two opposite sides.

As shown in fig. 9, after completing the suture operation of the wound a in the patient with the suture B by using two minimally invasivesurgical instruments 100 as in the first embodiment, the operator can clamp the remaining suture B by the actuatingportion 103 of one of the minimally invasivesurgical instruments 100, and in this embodiment, the suture B is introduced into the cuttingportion 15 located at theside edge 14 from between thebody 10 and therod 101 of the other minimally invasivesurgical instrument 100, and then the operator only needs to move the minimally invasivesurgical instrument 100 along the cutting direction of the cuttingportion 15, so that the cuttingportion 15 faces the suture B, and the suture B is cut off as shown in fig. 10, thereby completing the suture operation of the wound a.

As can be seen from the description of the second embodiment, thebody 10 of the present embodiment has the cuttingportions 15 respectively disposed at therim end 13 and theside edge 14, which not only achieves the same effect as the first embodiment, but also provides the operator with the operation of cutting the suture line B at the affected part by using the cuttingportions 15 of therim end 13 or theside edge 14, so that the suture line B can be cut after the suture is completed, and the cuttingportions 15 at different positions can provide better flexibility and convenience in operation.

As shown in fig. 11, a suture cutting tool according to a third embodiment of the present invention has a body 10, a button hole 11, a side opening 12, two end edges 13, two side edges 14, and two cutting portions 15, wherein one of the two cutting portions 15 is disposed at the end edge 13 and the other is disposed at the side edge 14, wherein the cutting portion 15 disposed at the end edge 13 is located close to the side opening 12, and the other cutting portion 15 disposed at the side edge 14 is located close to the end edge 13 at one end of the body 10, but the main difference from the second embodiment is that the two cutting portions 15 are disposed at the same side with respect to the body 10, the operation of cutting the suture line B can be performed as in the alternative of the first and second embodiments, the same effect as that of the first embodiment can be achieved, and the operator can cut the suture line B after the suture is completed at the cutting portion of the selected edge end 13 or the cutting portion 15 of the side edge 14 of the affected part, so as to achieve better flexibility and convenience in operation by the cutting portions 15 at different positions as described in the second embodiment.

As shown in fig. 12, the suture cutting tool according to the fourth embodiment of the present invention has abody 10, abuttonhole 11, aside opening 12, twoend edges 13, twoside edges 14, and two cuttingportions 15, as in the first embodiment, but the main difference from the first embodiment is that the two cuttingportions 15 are provided on the twoside edges 14, the two cuttingportions 15 are also symmetrical at the provided side edges 14, the two cuttingportions 15 are respectively close to theend edge 13 at one end of thebody 10, and the operation of cutting the suture B can be performed as in the second embodiment. Although the position of the cuttingportion 15 on thebody 10 is different from that of the aforementioned embodiment, the operation of the minimally invasivesurgical instrument 100 can cut the suture B with the cuttingportion 15 on theside edge 14, so as to achieve the same effect as the first embodiment.

As shown in fig. 13, a suture cutting tool according to a fifth embodiment of the present invention has abody 10, which has abutton hole 11, aside opening 12, twoend edges 13, and twoside edges 14, as in the first embodiment, but the main difference from the above embodiments is that thebody 10 has cuttingportions 15 at four positions in the present embodiment, wherein two cuttingportions 15 are provided at twoend edges 13, the other two cuttingportions 15 are provided at twoside edges 14, and the cuttingportions 15 provided at two positions of the end edges 13 are disposed opposite to each other near theside opening 12; the cuttingportions 15 provided at two positions of theside edge 14 are also provided to face theend edge 13 near one end of thebody 10. The suture cutting tool of the present embodiment can be operated as the minimally invasivesurgical instrument 100 of the previous embodiment, and can also cut the suture B by the cuttingportion 15 at either theend edge 13 or theside edge 14, so as to achieve the effects described in the previous embodiments.

As can be seen from the above description of the first to fifth embodiments, thebody 10 of the suture cutting tool of the present invention may have two cuttingportions 15 disposed on theend edge 13 as in the first embodiment, or two cuttingportions 15 disposed on theend edge 13 and theside edge 14 at opposite sides or the same side as in the second and third embodiments, or two cuttingportions 15 disposed on theside edge 14 as in the fourth embodiment, or four cuttingportions 15 disposed on theend edge 13 and theside edge 14 as in the fifth embodiment, which are only used to describe different embodiments of the suture cutting tool of the present invention, but the present invention is not limited to these embodiments, and the cuttingportions 15 are disposed on the twoend edges 13 and/or the twoside edges 14 of thebody 10, and the number and/or the positions of the cuttingportions 15 disposed on thebody 10 are different, which belongs to the protection scope of the present invention.

The above examples are only for illustrating the present invention and are not to be construed as limiting the scope of the present invention. It is intended that the present invention cover such modifications and variations as may come within the spirit of the invention.

Claims (10)

1. A suture cutting tool used in cooperation with a minimally invasive surgical instrument is characterized in that a rod body of the minimally invasive surgical instrument is provided with an operation part and an action part at two ends respectively, an operator can hold the operation part and extend one end of the rod body with the action part into a patient body to carry out suture operation, the suture cutting tool comprises a body, the body is provided with a buckling hole which is axially penetrated and is provided with a side opening which is radially opened, the side opening is communicated with the buckling hole, two ends of the body in the penetrating direction of the buckling hole are respectively provided with an end edge, two sides of the side opening are respectively provided with a side edge, the body is provided with a cutting part at least one of the two end edges and the two side edges, the rod body is buckled into the buckling hole through the side opening by the part adjacent to the action part to enable the body to be attached to the rod body for positioning, and surplus suture after the suture operation can be guided into the cutting part from the space between the body and the rod body, and moving the rod to sever the suture.

2. The suture cutting tool of claim 1, wherein the body is C-shaped and substantially straight, and covers more than half of the shaft face when the shaft is positioned.

3. The suture cutting tool for use with minimally invasive surgical instruments according to claim 2, wherein the two end edges and the two side edges each have a rounded lead angle.

4. The suture cutting tool for use with minimally invasive surgical instruments according to claim 3, wherein the cutting portion is disposed at least one of the two end edges and is located proximate to the side opening.

5. The suture cutting tool for use with minimally invasive surgical instruments according to claim 4, wherein the body has two cutting portions at two locations, the two cutting portions being located at two end edges that are symmetrically and respectively close to two side edges of the side opening.

6. The suture cutting tool for use with minimally invasive surgical instruments according to claim 3, wherein the cutting portion is disposed at least one of the two side edges and is located near an end edge of one end of the body.

7. The suture cutting tool for use with minimally invasive surgical instruments according to claim 6, wherein the body has the cutting portions at two locations, and the two cutting portions are symmetrically located at the side edges thereof and respectively close to the end edges of one end of the body.

8. The suture cutting tool for use with minimally invasive surgical instruments according to claim 1, wherein the cutting portion is disposed at the end edge or the side edge of the body and has an inner bevel and an outer bevel, and a blade portion is formed between the inner bevel and the outer bevel.

9. The suture cutting tool of claim 3, wherein the body has two cutting portions, one cutting portion disposed at one of the two end edges and located adjacent to the side opening, and the other cutting portion disposed at one of the two side edges and located adjacent to the end edge of the one end of the body.

10. The suture cutting tool of claim 1, wherein the body is integrally formed and the cutting portion is U-shaped.

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