A cleaner for a trocar sleeve and a method for using the cleaner

Abstract

The present invention discloses a cleaner for a trocar sleeve and a method for using the cleaner. The cleaner comprises a rod outer periphery wrapped with a cleaning material, and a blocking portion is provided at the end of the rod extending into the trocar sleeve to seal the annular gap between the end of the rod and the trocar sleeve. This prevents fragments of the cleaning material from cracking and falling into the human body through the annular gap, thereby reducing surgical risks. To facilitate the adaptation of the blocking portion to trocar sleeves of different inner diameters and expand the scope of application of the cleaner, the blocking portion is capable of changing size radially along the rod to adapt to the inner wall of the trocar sleeve. A driving portion is provided as needed to drive the blocking portion to change size radially along the rod. Simultaneously, the blocking portion axially limits the cleaning material on the rod, preventing the cleaning material from falling off the rod as a whole during reciprocating motion.

Description

Technical Field

[0001] The present invention relates to the technical field of medical surgical instruments, and in particular to a cleaner for a trocar sleeve. Background Art

[0002] During laparoscopic surgery, surgeons use a trocar as a conduit for surgical instruments and imaging equipment. While this improves surgical flexibility and safety, the repeated insertion and removal of surgical instruments and imaging equipment during surgery often causes the trocar cannula to accumulate blood, tissue fragments, and other biological matter. This not only affects the clarity of the surgical field but also increases the risk of surgical infection. Therefore, maintaining the cleanliness of the trocar cannula is crucial for improving surgical efficiency and patient safety.

[0003] Some existing puncture cannulas wrap cleaning materials on the rod body, and the rod body carries the cleaning materials and reciprocates in the puncture cannula for cleaning. Compared with the method of using pliers to clamp the gauze block to clean the inner wall of the cannula, the operation is convenient, but there are still some technical problems. For example, the medical sponge used as a cleaning material is easily cracked due to friction with the tube wall during reciprocating motion. The fragments produced by the cracking pose a surgical risk of falling into the human body, and this needs to be improved. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention proposes a cleaner for a trocar cannula, which protects the cleaning material by optimizing the structure of the cleaner to prevent fragments of the cleaning material from falling into the human body.

[0005] To achieve the above-mentioned objectives, the present invention provides a cleaning device for a trocar cannula, comprising a rod and a cleaning material, wherein the cleaning material is coated on the rod and is carried by the rod to reciprocate within the trocar cannula, whereby the cleaning material cleans the inner wall of the cannula during the reciprocating motion. To prevent fragments of the cleaning material from cracking during the reciprocating motion and from falling into the human body, a blocking portion is provided at the end of the rod extending into the trocar cannula. The blocking portion abuts against the inner wall of the trocar cannula, thereby blocking the annular gap between the end of the rod and the trocar cannula, thereby confining the cleaning material within the closed-bottom annular space formed by the rod and the trocar cannula, and preventing fragments of the cleaning material from escaping from the annular space and falling into the human body.

[0006] The blocking portion at the end of the rod body abuts against the end surface of the cleaning material at the same time, axially limiting the cleaning material on the rod body, increasing the connection strength between the two, and preventing the cleaning material from falling off the rod body as a whole during reciprocating motion.

[0007] In order to enable the cleaner to adapt to trocar cannulas of different inner diameters, preferably, the radial dimension of the blocking portion along the rod body can be changed to adapt to the inner wall of the trocar cannula; the blocking portion comprises an elastic material and relies on its own deformation to adapt to trocar cannulas of different inner diameters, or is filled with fluid to contract and expand in the radial direction; or, the blocking portion is composed of a plurality of components, and the plurality of components can move relative to each other to form a shape adapted to the size of the annular gap by adjusting their relative positions according to the size of the annular gap.

[0008] According to needs, a driving part is provided in the rod body to drive the blocking part to change the size along the radial direction of the rod body. The transmission structure of the driving part includes fluid or non-fluid, the fluid transmission structure includes pneumatic or hydraulic, and the driving source of the driving part can be electric or manual.

[0009] Another object of the present invention is to disclose a method for using the above-mentioned trocar cannula cleaner, comprising the following steps:

[0010] S1. Insert the cleaner into the trocar cannula;

[0011] S2. The blocking portion of the end of the cleaner is pressed against the inner wall of the trocar cannula;

[0012] S3. Push and pull the cleaner back and forth in the trocar sleeve, and the cleaning material on the cleaner cleans the inner wall of the trocar sleeve.

[0013] The present invention provides a blocking portion at the end of the rod body that extends deep into the trocar cannula to block the annular gap between the rod end and the trocar cannula. This effectively prevents fragments of the cleaning material from cracking and entering the human body through the annular gap, thereby reducing surgical risks. Furthermore, to facilitate the blocking portion's adaptation to trocar cannulae of varying inner diameters, thereby expanding the cleaner's application range, the blocking portion is designed to be able to change in size along the radial direction of the rod body to conform to the inner wall of the trocar cannula, and a drive portion is provided as needed to actuate the blocking portion. Simultaneously, the blocking portion limits the cleaning material axially on the rod body, preventing it from falling off the rod body as a whole during reciprocating motion. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the cleaning device of embodiment 1.

[0015] Figure 2 It is a structural diagram of the blocking part.

[0016] Figure 3 It is a structural diagram of the rod body of Example 2.

[0017] Figure 4 This is a structural diagram of the drive unit.

[0018] Figure 5 This is a structural diagram of the cleaner of Example 2 without the end plate.

[0019] Figure 6 This is a structural diagram of the other side of the cleaner of Example 2.

[0020] Figure 7 This is a structural diagram of the end plate.

[0021] Figure 8 It is an overall cross-sectional view of the cleaner.

[0022] Figure 9 It is a structural diagram of the cleaner of embodiment 3.

[0023] Figure markings: 1-rod body, 2-cleaning material, 3-blocking part, 4-blocking piece, 5-elastic ring, 6-groove, 7-embedded groove, 8-partition wall, 9-second groove, 10-driving rod, 11-cam, 12-torsion spring, 13-knob, 14-end cover, 15-counterbore, 16-threaded hole, 17-guide groove, 18-guide column, 19-baffle, 20-elastic constraint net. DETAILED DESCRIPTION

[0024] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0025] Example 1

[0026] See attached Figure 1-2 A cleaner for a puncture cannula is disclosed, comprising a rod 1 and a cleaning material 2. The cleaning material 2 is wrapped around the rod 1. The rod 1 carries the cleaning material 2 and reciprocates within the puncture cannula. During this reciprocating motion, the cleaning material 2 cleans the inner wall of the cannula. A blocking portion 3 is provided at the end of the rod 1 that extends into the puncture cannula. The circumferential wall of the blocking portion 3 abuts against the inner wall of the puncture cannula, thereby blocking the annular gap between the end of the rod 1 and the puncture cannula and preventing fragments of the cleaning material 2 from cracking and falling into the human body through the annular gap. At the same time, the blocking portion 3 abuts against the end face of the cleaning material 2, axially limiting the cleaning material 2 on the rod 1 and preventing the cleaning material 2 from falling off the rod 1 as a whole during the reciprocating motion.

[0027] like Figure 1As shown, the blocking portion 3 is composed of multiple components, including multiple baffles 4 and elastic rings 5. The multiple baffles 4 are arranged in a ring around the axis of the rod body 1 at the end of the rod body 1. A groove 6 is provided on the peripheral wall of the baffle 4, and the elastic ring 5 is embedded in the groove 6. The groove 6 limits the elastic ring 5 to prevent the elastic ring 5 from escaping from the peripheral wall of the baffle 4. At the same time, the elastic ring 5 fills the gaps between the baffles 4, preventing fragments of the cleaning material 2 from falling into the human body through the above-mentioned gaps. Under the action of the drive unit, the multiple baffles 4 can move radially along the rod body 1. The peripheral wall of the drive plate 4 and the elastic ring 5 abut against the inner wall of the puncture cannula, sealing the annular gap between the end of the rod body 1 and the puncture cannula.

[0028] For the installation structure of multiple baffles 4 at the end of the rod body 1, preferably, as Figure 1 As shown, a plurality of embedding grooves 7 are provided at the end of the rod body 1, and a plurality of baffles 4 are respectively installed in the embedding grooves 7, with partitions 8 provided between the embedding grooves 7. To facilitate the installation of the elastic ring 5, preferably, a second groove 9 is provided on the peripheral wall of the partition 8 for the elastic ring 5 to be embedded in. Preferably, when the baffles 4 move radially, there is no gap between the elastic ring 5 and the partition 8 in the radial direction of the rod body 1, and at least a portion of the elastic ring 5 is always embedded in the second groove 9.

[0029] A driving portion (not shown) is provided at the bottom of the embedding groove 7 , which drives the baffle 4 to move radially along the rod body 1 . The driving portion can be an electric push rod, a hydraulic rod, an elastic member or a cam assembly, as long as it can drive the baffle 4 to move radially.

[0030] Example 2

[0031] The second embodiment discloses a structure of the driving part, and the other structures are the same as those of the first embodiment, such as Figure 3-9 As shown, the rod body 1 is hollow, and a driving part is provided inside the rod body 1, which can rotate relative to the rod body 1; an end cap 14 is provided at the end of the rod body 1 extending into the puncture sleeve, which is used to cover the baffle 4 and the driving part; the driving part includes a driving rod 10, a cam 11 and a torsion spring 12, the cam 11 is located at the bottom of the embedding groove 7, abuts against the baffle 4, and has peaks and valleys on the cam 11; the driving rod 10 is located at one end of the cam 11, and passes through the rod body 1 and extends from the other end; at the other end of the rod body 1 A torsion spring 12 is provided between the end portion and the driving rod 10, and a card slot is provided on the end face of the rod body 1 and the driving rod 10 respectively. The two feet of the torsion spring 12 are respectively engaged in the card slot. The torsion spring 12 drives the driving rod 10 to drive the cam 11 to rotate, and the convex peak on the cam 11 abuts against the baffle 4, driving the baffle 4 to move radially outward along the rod body 1; wherein the radial distance between the apex of the convex peak and the bottom of the concave valley is designed to be greater than the radial width of the above-mentioned annular gap to ensure that the cam 11 abuts the baffle 4 against the inner wall of the puncture cannula.

[0032] In order to facilitate the screwing of the driving part, preferably, a knob 13 is provided at the end of the driving rod 10, and a baffle 19 is provided at the end of the rod body 1. When using a cleaner to clean the puncture cannula:

[0033] First, pinch the knob 13 and the baffle 19 with both hands respectively, and turn the knob 13 relative to the rod body 1 so that the valley on the cam 11 abuts against the baffle 4, and the torsion spring 12 accumulates enough to resist the radially inward force applied by the elastic ring 5 to the baffle 4, driving the cam 11 to push the baffle 4 to move radially outward along the rod body 1; secondly, extend the cleaner into the puncture tube; then, release the knob 13, and the torsion spring 12 drives the driving rod 10 to drive the cam 11 to rotate, and the peak on the cam 11 abuts against the baffle 4, driving the baffle 4 radially outward along the rod body 1 to abut against the inner wall of the puncture tube, thereby blocking the annular gap between the end of the rod body 1 and the puncture tube; finally, pinch the baffle 19 by hand to push and pull the rod body 1 back and forth, and the rod body 1 carries the cleaning material 2 to clean the inner wall of the puncture tube.

[0034] like Figure 7-8 As shown, a countersunk hole 15 is provided on the end cap 14, and two threaded holes 16 are provided on the end surface of the rod body 1. Fasteners (not shown, such as bolts or screws) are used to secure the end cap 14 to the end surface of the rod body 1. Preferably, the threaded holes 16 are provided on the wall of the embedding groove 7, and a guide groove 17 is provided on the corresponding baffle 4 to allow the fastener to pass through and guide the baffle 4. Preferably, guide grooves 17 are also provided on the other baffles 4, and corresponding guide posts 18 are provided on the end cap 14.

[0035] Example 3

[0036] Example 3 discloses a cleaner for a trocar sleeve, such as Figure 9 As shown, the other structures are the same as those of the first embodiment, except that the cleaning material 2 is wrapped with an elastic restraining mesh 20. The elastic restraining mesh 20 is made of a metal such as nickel-titanium alloy, cobalt-chromium alloy, gold-cadmium alloy, or copper-zinc alloy; or a plastic such as polyurethane or polyamide; or latex or silicone. The elastic restraining mesh 20 is woven from the above materials. The elastic restraining mesh 20 increases the overall strength of the cleaning material 2 and reduces the risk of the cleaning material 2 breaking during the cleaning process.

[0037] The above describes in detail the basic principles, main features and advantages of the present invention in the field of exploration, and details some examples of use. Finally, it should be noted that the examples cited above are only used to explain this patent and are not used to limit the present invention. Although we have described the present invention in detail with reference to the examples, those skilled in the art can still modify the examples and solutions described, or replace the relevant technical parts. Therefore, any modifications and equivalent replacements made within the spirit and principles of the present invention are within the scope of protection of the claims of the patent of this invention.

Claims

1. A trocar cannula cleaner, characterized in that: The device comprises a rod body and a cleaning material, wherein the cleaning material is coated on the rod body; a blocking portion is provided at the end of the rod body extending into the trocar sleeve, wherein the peripheral wall of the blocking portion abuts against the inner wall of the trocar sleeve to block the annular gap between the end of the rod body and the trocar sleeve; The blocking portion can change size along the radial direction of the rod body; The blocking portion is composed of a plurality of components, and the plurality of components can move relative to each other to form a shape adapted to the size of the annular gap by adjusting relative positions.

2. The trocar cannula cleaner according to claim 1, characterized in that: The cleaner further includes a driving portion, which is disposed in the rod body and drives the blocking portion to change its size along the radial direction of the rod body.

3. The trocar cannula cleaner according to claim 2, characterized in that: The blocking portion includes a plurality of blocking pieces and an elastic ring. The plurality of blocking pieces are arranged in a ring around the axis of the rod body in an embedded groove at the end of the rod body. A groove is provided on the peripheral wall of the blocking piece, and the elastic ring is embedded in the groove. The driving portion is arranged at the bottom of the embedded groove to drive the blocking piece to move radially along the rod body.

4. A trocar cannula cleaner according to claim 3, characterized in that: The driving part includes a driving rod, a cam and a torsion spring, the cam is located at the bottom of the embedded groove and abuts against the baffle; the cam is provided with peaks and valleys; the driving rod is located at one end of the cam, passes through the rod body and extends out from the other end of the rod body; the torsion spring is provided between the other end of the rod body and the driving rod; the torsion spring drives the driving rod to drive the cam to rotate, the peak on the cam abuts against the baffle, driving the baffle to move radially outward along the rod body; the radial distance between the peak apex and the valley bottom is greater than the radial width of the annular gap.

5. The trocar cannula cleaner according to claim 3, characterized in that: The cleaner further comprises an end cover, wherein the end cover is provided with a countersunk hole, and an end surface of the rod body is provided with a threaded hole, and a fastener passes through the countersunk hole and is screwed into the threaded hole.

6. The trocar cannula cleaner according to claim 5, characterized in that: The threaded hole is arranged on the groove wall of the embedding groove, the end cover is provided with a guide column, and the blocking piece is provided with a guide groove for the fastener or the guide column to pass through.

7. A method for using a trocar cannula cleaner, using the cleaner according to any one of claims 1 to 6, comprising the following steps: S1. Insert the cleaner into the trocar cannula; S2. The blocking portion of the end of the cleaner is pressed against the inner wall of the trocar cannula; S3. Push and pull the cleaner back and forth in the trocar sleeve, and the cleaning material on the cleaner cleans the inner wall of the trocar sleeve.

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