organ retractor

Abstract

The present invention provides an organ retractor that can pull an organ regardless of the distance between the organ and the anchor point. [Solution] This organ retractor comprises a clip 2 for gripping an organ O, a long elastic body 3 with one end attached to the clip 2, and a plurality of needles 4a, 4b attached to the elastic body 3. At least one of the needles 4a, 4b is movable along the elastic body 3. With this configuration, the distance between needle 4a and the clip 2 can be changed by adjusting the distance between needles 4a, 4b, so that the organ O can be pulled regardless of the distance between the organ O and the anchor point A.

Description

Technical Field

[0001] The present invention relates to an organ retractor for pulling organs in surgical operations, particularly laparoscopic surgeries and surgeries using surgical support robots.

Background Art

[0002] In surgical operations, it may be necessary to lift or displace organs in order to secure the visual field and the surgical field. Conventionally, such lifting and displacement have been performed by the hands of the surgeon or surgical assistant. However, this causes the hands of the surgeon or surgical assistant to be blocked, reducing the operability. In addition, there is a problem that the hands become fatigued if the lifting and displacement are carried out for a long time. Further, in laparoscopic surgeries and surgeries using surgical support robots, it is impossible to lift or displace organs by hand.

[0003] Therefore, an organ retractor has been developed in which a clip for gripping an organ is provided at one end of a long elastic band, and a needle for attachment to an anchor point such as the abdominal wall is provided at the other end of the elastic band (see, for example, Patent Document 1). In such an organ retractor, for example, in laparoscopic cholecystectomy, the clip is attached to the bottom of the gallbladder, and the needle is attached to the anchor point so that tension is applied to the elastic band, thereby pulling the gallbladder in a lifted state without using the hands of the surgeon or surgical assistant.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the organ retractor as described above, when the distance between the organ and the anchor point is short, sufficient tension may not be applied to the elastic band, and the organ may not be pulled.

[0006] This invention aims to solve the above problems by providing an organ retractor that can pull an organ regardless of the distance between the organ and the anchor point. [Means for solving the problem]

[0007] This invention relates to an organ retractor comprising a clip for grasping an organ, a long elastic body with one end attached to the clip, and a plurality of needles attached to the elastic body, wherein at least one of the plurality of needles is movable along the elastic body.

[0008] The elastic body is preferably formed in an annular shape.

[0009] Preferably, two of the needles are attached to the elastic body. [Effects of the Invention]

[0010] According to this invention, the distance between the needle and the clip can be changed by adjusting the distance between multiple needles, so that the organ can be pulled regardless of the distance between the organ and the anchor point. [Brief explanation of the drawing]

[0011] [Figure 1] A perspective view of an organ retractor according to one embodiment of the present invention. [Figure 2] (a) to (d) are perspective views showing the operation when using the organ retractor described above. [Modes for carrying out the invention]

[0012] An organ retractor according to one embodiment of the present invention will be described with reference to the drawings. As shown in Figure 1, the organ retractor 1 comprises a clip 2 for reversibly grasping an organ during surgery, a long elastic body 3 with one end attached to the clip 2, and a plurality of needles 4 attached to the elastic body 3.

[0013] Clip 2 has a pair of tip jaws 21, a pair of gripping parts 22 connected to each of the tip jaws 21, and a spring 23 connecting the pair of gripping parts 22 to each other. The spring 23 is a metal wire member processed into a coil spring shape. The tip jaws 21 and gripping parts 22 intersect in an X shape so that the upper gripping part 22 in the figure interlocks with the lower tip jaw 21, and the lower gripping part 22 in the figure interlocks with the upper tip jaw 21.

[0014] When no external force is applied, the spring 23 positions a pair of gripping parts 22, which are formed in a nearly flat shape, parallel to each other, and the pair of tip jaws 21 are engaged with each other. When an external force is applied to bring the pair of gripping parts 22 closer together, the pair of tip jaws 21 move away from each other and open, allowing the device to grip an organ. When the external force is removed, the biasing force of the spring 23 returns the pair of gripping parts 22 to a parallel state, and the pair of tip jaws 21 close again.

[0015] In the illustrated example, the elastic body 3 is formed in an annular shape, and one end is wrapped around the spring 23 to attach it to the clip 2. The elastic body 3 is, for example, made of a 2 mm diameter silicone ring.

[0016] The multiple needles 4 in the illustrated example consist of two needles 4a and 4b. Needles 4a and 4b have the same shape as each other and will be collectively referred to as needle 4 below. Needle 4 is formed by bending a linear member and has a mounting portion 41 that is attached to the elastic body 3, a straight portion 42 that extends linearly from the mounting portion 41, and a curved portion 43 that curves from the tip of the straight portion 42 toward the mounting portion 41. The mounting portion 41 is formed in an annular shape through which the elastic body 3 is inserted, and its inner diameter is configured to be such that the needle 4 can move along the elastic body 3.

[0017] The organ retractor 1, configured as described above, is suitably used for retracting organs in an elevated or compressed state during conventional open surgery or endoscopic surgery. The operation of the organ retractor 1 in laparoscopic surgery will be described below with reference to Figures 2(a) to (d).

[0018] First, as shown in Figure 2(a), the organ O, such as the gallbladder or liver, is grasped with the clip 2, and the curved portion 43 of the needle 4a is engaged with the anchor point A on the abdominal wall or the like using the forceps C. If the organ O can be sufficiently elevated or compressed at this point, the surgery can be continued. On the other hand, if the distance between the organ O and the anchor point A is short and the elastic body 3 is loose and the organ O cannot be sufficiently elevated or compressed, proceed to the steps shown in Figures 2(b)-(d).

[0019] Figure 2(b) shows the needle 4b being grasped by forceps C. From this state, as shown in Figure 2(c), tension is generated in the elastic body 3, and the curved portion 43 of the needle 4b is engaged with the anchor point A at a predetermined distance from the needle 4a. As a result, the elastic body 3 deforms into a triangular shape, reducing the distance between the needle 4a and the spring 23 (clip 2), allowing for greater elevation or retraction of the organ O compared to the state shown in Figure 2(a). To further elevation or retract the organ O, as shown in Figure 2(d), the needle 4b can be engaged at a point further away from the needle 4a, further reducing the distance between the needle 4a and the clip 2.

[0020] According to the organ retractor 1 as described above, by adjusting the distance between the needles 4a and 4b, the distance between the needle 4a and the clip 2 can be changed. Therefore, when the distance between the organ O and the anchor point A is short and sufficient tension cannot be applied to the elastic body 3, the needle 4b can be pulled to bring the needle 4a and the clip 2 closer to each other. As a result, regardless of the distance between the organ O and the anchor point A, the organ O can be pulled in a lifted or displaced state. At this time, since the elastic body 3 is formed in an annular shape, the needle 4b can be easily moved along the elastic body 3, and the elastic body 3 can be deformed with a small force, resulting in good operability.

[0021] Note that the organ retractor according to the present invention is not limited to the above-described embodiment and can be variously modified. For example, the elastic body does not necessarily have to be formed in an annular shape and may be formed in a belt shape. Also, the number of needles attached to the elastic body is not necessarily limited to two and may be three or more.

Explanation of Signs

[0022] 1 Organ retractor 2 Clip 3 Elastic body 4, 4a, 4b Needles O Organ

Claims

1. An organ retractor comprising a clip for grasping organs, a long elastic body with one end attached to the clip, and a plurality of needles attached to the elastic body, An organ retractor characterized in that at least one of the plurality of needles is movable along the elastic body.

2. The organ retractor according to claim 1, characterized in that the elastic body is formed in an annular shape.

3. The organ retractor according to claim 1 or 2, characterized in that two needles are attached to the elastic body.

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