Disposable medical multi-channel single-port trocar

Abstract

This invention discloses a disposable medical multi-channel single-port trocar, comprising a protective sleeve, a sealing element, and multiple trocars. The protective sleeve includes a thin film sleeve with rubber rings connected to both ends. One rubber ring is connected to the lower part of the sealing element, and the trocars are mounted on top of the sealing element; the number of trocars is adjustable. The sealing element includes an outer base and an inner base, with the inner base located inside the outer base. A connecting seat is installed inside the inner base, and an annular pressure cap is fixed above the connecting seat. The annular pressure cap is threadedly connected to a sealing cap, which contains a removable sealing membrane through which multiple trocars pass. This invention utilizes a configuration of multiple trocars and a connecting sealing element, allowing doctors to easily assemble or replace trocars with different port sizes on-site. This enables doctors to freely combine trocars of different port sizes according to actual needs, facilitating surgical procedures.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more particularly to a disposable medical multi-channel single-hole puncture device. Background Technology

[0002] Medical trocars are suitable for minimally invasive surgeries in anorectal surgery and laparoscopic surgery. Generally, a small incision is made in the patient's abdomen, and a trocar is placed through this incision. A specially designed extended surgical instrument is inserted through the trocar's channel. Under the monitoring and guidance of a high-tech display screen, the surgeon manipulates the surgical instrument outside the abdominal cavity to perform operations such as exploration, electrocoagulation, hemostasis, tissue separation and incision, and suturing of diseased tissue. Existing medical trocars include single-port single-channel trocars and single-port multi-channel trocars. Single-port single-channel trocars, such as patent number CN201110218115.4, carry a higher surgical risk. With the development of medical technology, single-port multi-channel trocars are gradually replacing single-port single-channel trocars. Existing single-port multi-channel trocars include patent numbers CN202120047123.6, CN201710573863.1, and CN202121366711.2.

[0003] Single-port multi-channel trocars typically have 2 to 4 channels, with varying channel sizes and relatively fixed specifications. However, different trocar sizes must be selected based on surgical needs. Therefore, this paper proposes a disposable medical multi-channel single-port trocar, which only requires selecting trocars with different channel sizes, allowing for flexible channel selection. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this invention proposes a disposable medical multi-channel single-hole puncture device, which, compared to existing single-hole multi-channel puncture devices, allows for flexible adjustment and selection of puncture devices of different specifications.

[0005] The technical solution of this invention is implemented as follows:

[0006] Disposable medical multi-channel single-port trocar, including:

[0007] A protective sleeve, the protective sleeve comprising a thin film sleeve, the two ends of which are connected to rubber rings;

[0008] A seal, wherein one of the rubber rings is connected to the lower part of the seal;

[0009] Multiple puncture devices are mounted above the seal, and the number of puncture devices is adjustable.

[0010] Its features are,

[0011] The sealing element includes an outer base and an inner base, with the inner base located inside the outer base. A connecting seat is installed inside the inner base, and an annular pressure cap is fixedly connected above the connecting seat. The annular pressure cap is threadedly connected to a sealing cap. The sealing cap contains a removable sealing membrane, through which multiple puncture instruments penetrate.

[0012] The puncture device includes a gel sleeve, a first sealing ring installed below the gel sleeve, the first sealing ring being above and in contact with the sealing element, a tubular channel body connected below the gel sleeve, the tubular channel body being connected to a straight tube, a Luer connector connected below the straight tube, and a second sealing ring at the connection between the straight tube and the Luer connector, wherein, when the puncture device is installed, the Luer connector penetrates the sealing membrane, and the second sealing ring is located below the sealing membrane.

[0013] In this disposable medical multi-channel single-hole puncture device of the present invention, the gel sheath has a variable diameter hole above it, the diameter of which is adjustable, and a stop bar is also installed inside the gel sheath to limit the maximum diameter of the variable diameter hole.

[0014] In this disposable medical multi-channel single-hole puncture device of the present invention, an upper guide body and a lower guide body are also installed inside the gel sheath. The lower guide body is fixed inside the gel sheath, and the upper guide body is fixedly connected above the lower guide body, and the upper guide body and the lower guide body are connected through each other.

[0015] In this disposable medical multi-channel single-hole puncture device of the present invention, the annular pressure cap has an external thread, the sealing cap has an internal thread, the external thread and the internal thread mate, wherein the external thread is an incomplete thread.

[0016] In this disposable medical multi-channel single-hole puncture device of the present invention, the sealing cap is provided with multiple upper through holes, the puncture device is connected to the sealing membrane through the through holes, and the sealing cap is provided with side through holes on both sides, the side through holes being connected to an air injection tube.

[0017] In this disposable medical multi-channel single-hole puncture device of the present invention, the air injection tube includes a connecting tube, which is connected to a side through hole. A sealing valve is installed on the connecting tube, and the sealing valve is provided with an air injection hole. The sealing valve has two states. In one state, the air injection hole is in communication with the connecting tube, and in the other state, the sealing valve seals the connecting tube.

[0018] In this disposable medical multi-channel single-hole puncture device of the present invention, the outer base has four threaded holes for installing the inner base. The outer base also has limiting strips on both sides. When installing the inner base, the inner base is first limited by the limiting strips and then the inner base is fixedly connected. The outer base also has fixing grooves on both sides for subsequent fixing of the outer base.

[0019] In this disposable medical multi-channel single-hole puncture device of the present invention, the connecting seat has a plurality of limiting grooves for limiting the rotation of the connecting seat, and the connecting seat also has a first elastic member, which is connected to the inner base.

[0020] In this disposable medical multi-channel single-hole puncture device of the present invention, the annular pressure cap also has a mounting protrusion, and a mounting ring is connected to the mounting protrusion. The mounting ring includes a mounting hole that corresponds to the mounting protrusion. The mounting ring also has a washer in the middle and a second elastic member on the outer side of the mounting ring. A limit block is connected to the second elastic member.

[0021] In this disposable medical multi-channel single-hole puncture device of the present invention, the connecting seat also has an arc-shaped strip, the number of which is consistent with the number of the second elastic members installed on the mounting plate. During installation, the second elastic members are located on one side of the arc-shaped strip.

[0022] In this disposable medical multi-channel single-hole puncture device of the present invention, the gel sheath is made of a soft material.

[0023] In this disposable medical multi-channel single-hole puncture device of the present invention, when the puncture device is connected to the seal, a puncture needle is also installed below the Luer connector.

[0024] In this disposable medical multi-channel single-port trocar of the present invention, the installation steps of the disposable medical multi-channel single-port trocar are as follows:

[0025] Step 1: Before the operation, select trocars with different channel opening sizes. Commonly used sizes are 5mm, 10mm, and 12mm.

[0026] Step 2: Assemble the sealing components. First, install the inner base inside the outer base. During installation, first limit the inner base with the limiting strip, and then fix the inner base with bolts.

[0027] Step 2.1: Connect the connecting seat to the inner base. First, align the limiting groove with the inner base, then push the connecting seat into the inner base and clamp the connecting seat with the first elastic member.

[0028] Step 2.2: Fix the annular cover to the connecting seat, wherein the mounting protrusion is inserted into the connecting seat and the mounting protrusion is located on one side of the arc strip;

[0029] Step 2.3: Connect the mounting ring to the top of the annular cover, with the second elastic member located on one side of the arc-shaped strip and fixed by the second elastic member;

[0030] Step 3: Insert multiple trocars into the sealing cap. The number of trocars can be adjusted according to the surgical situation.

[0031] Step 4: Connect the sealing cap to the annular pressure cap and tighten the sealing cap;

[0032] Step 5: Connect the air inlet tubes on both sides of the sealing cap to the tubing, and the surgery can begin.

[0033] The disposable medical multi-channel single-port trocar of this invention has the following advantages: This invention uses multiple trocars connected by a sealing element, which allows doctors to easily assemble or replace trocars with different port sizes on-site. This facilitates the doctor's ability to freely combine trocars of different port sizes according to actual needs, thus aiding surgical procedures. Simultaneously, the trocar also has a first sealing ring and a second sealing ring to ensure airtightness when the trocars are connected. The sealing element of this invention uses a threaded connection, allowing the sealing cap to be opened at any time during surgery to remove the sample specimen. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the disposable medical multi-channel single-port puncture device of the present invention;

[0035] Figure 2 This is an exploded structural diagram of the disposable medical multi-channel single-port puncture device of the present invention;

[0036] Figure 3 This is a partial exploded structural diagram of the disposable medical multi-channel single-hole puncture device of the present invention;

[0037] Figure 4 This is a side sectional view of the mating of the seal and the protective sleeve of the present invention;

[0038] Figure 5 This is a partial exploded structural diagram of the sealing element of the present invention;

[0039] Figure 6 This is a schematic diagram of the mounting ring structure of the present invention;

[0040] Figure 7 This is a partial structural schematic diagram of the puncture device of the present invention;

[0041] Figure 8 This is a schematic diagram of the installation of the puncture device of the present invention;

[0042] Figure 9 This is a side sectional view of the puncture device and sealing cap of the present invention in action;

[0043] The reference numerals in the attached drawings are as follows: 1 protective sleeve, 11 membrane sleeve, 12 rubber ring, 2 seal, 21 outer base, 211 threaded hole, 212 limiting strip, 213 fixing groove, 22 inner base, 221 mounting plate, 23 connecting seat, 231 limiting groove, 232 mounting groove, 233 first elastic member, 234 arc-shaped strip, 24 annular gland, 241 external thread, 242 mounting protrusion, 25 sealing cover, 251 upper through hole, 252 side through hole, 253 inner... Thread, 254 arc groove, 255 sealing membrane, 26 mounting ring, 261 mounting hole, 262 washer, 263 second elastic member, 264 limiting block, 27 air injection tube, 271 connecting tube, 272 sealing valve, 273 air injection hole, 3 puncture device, 31 gel sleeve, 311 reducing hole, 312 stop bar, 32 first sealing ring, 33 upper guide body, 34 lower guide body, 35 tubular channel body, 36 straight tube, 37 Luer connector, 38 second sealing ring. Detailed Implementation

[0044] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0045] like Figures 1 to 9 As shown, this disposable medical multi-channel single-port trocar of the present invention includes a protective sleeve 1, a sealing element 2, and multiple trocars 3. The protective sleeve 1 includes a thin film sleeve 11, with rubber rings 12 connected to both ends of the thin film sleeve 11. One of the rubber rings 12 is connected below the sealing element 2, and the trocars 3 are installed above the sealing element 2, and the number of trocars 3 is adjustable.

[0046] like Figures 2 to 3 As shown, the seal 2 includes an outer base 21 and an inner base 22, with the inner base 22 installed inside the outer base 21. The outer base 21 has four threaded holes 211 for installing the inner base 22. Limiting strips 212 are also present on both sides of the outer base 21, and a mounting plate 221 is present on the inner base 22. When installing the inner base 22, the limiting strips 212 first limit the inner base 22, and then bolts are used to fix the mounting plate 221 on the inner base 22 to the threaded holes 211. A connecting seat 23 is installed inside the inner base 22, and an annular pressure cap 24 is installed above the connecting seat 23. The annular pressure cap 24 is threadedly connected to a sealing cover 25, which contains a sealing membrane 255. This sealing membrane 255 is removable and replaceable, and is a disposable item. Multiple trocars 3 penetrate the sealing membrane 255. Commonly used sizes of trocars 3 are 5mm, 10mm, and 12mm. Different sizes of trocars can be selected according to the needs of the operation before the operation, and the number of trocars 3 can also be adjusted according to the needs of the operation. The outer base 21 also has fixing grooves 213 on both sides, which are used to fix the outer base 21 later.

[0047] like Figure 2As shown, the connecting seat 23 has multiple limiting grooves 231, which are used to limit the rotation of the connecting seat 23. The connecting seat 23 also has a mounting groove 232, which cooperates with the inner base to further limit the rotation of the connecting seat 23. The connecting seat 23 also has a first elastic member 233 and an arc-shaped strip 234. When installing the connecting seat 23, the limiting groove 231 is first aligned with the inner base 22, and then the connecting seat 23 is pushed into the inner base 22, and the connecting seat 23 is clamped by the first elastic member 233. The annular pressure cap 24 is fixedly connected to the connecting seat 23, and the annular pressure cap 24 also has a mounting protrusion 242. The mounting protrusion 242 is inserted into the connecting seat 23, and the mounting protrusion 242 is located on one side of the arc-shaped strip 234.

[0048] like Figures 5 to 6 As shown, a mounting ring 26 is connected to the mounting protrusion 242, and the mounting ring 26 includes a mounting hole 261. The mounting hole 261 engages with a protrusion on the mounting protrusion 242. The mounting ring 26 also has a washer 262 in the middle, and multiple second elastic members 263 on the outer side of the mounting ring 26. Limiting blocks 264 are connected to the second elastic members 263. After the mounting ring 26 is connected above the annular pressure cap 24, the mounting ring 26 is fixed by the second elastic members 263. The second elastic members 263 are located on one side of the arc-shaped strip 234, and the limiting blocks 264 on the second elastic members 263 precisely clamp the arc-shaped strip 234, further fixing the mounting ring 26.

[0049] The annular cap 24 has an external thread 241, and the sealing cap 25 has an internal thread 253. The external thread 241 mates with the internal thread 253. The external thread 241 is an incomplete thread, which does not significantly affect the load-bearing capacity between the annular cap and the sealing cap. The annular cap 24 and the sealing cap 25 are connected by threads, and the incomplete thread on the annular cap 24 facilitates easy opening of the sealing cap during surgery to remove the specimen sample. Figure 2 , Figure 5 , Figure 8 and Figure 9 As shown, the top of the sealing cap 25 is also provided with four upper through holes 251 (the number in the figure is for reference only and can be adjusted according to the actual situation). The puncture device 3 is connected to the sealing membrane 255 through these upper through holes 251. Side through holes 252 are provided on both sides of the sealing cap 25, and the side through holes 252 are connected to an air injection tube 27. The air injection tube 27 includes a connecting tube 271, which is connected to the side through holes 252. A sealing valve 272 is installed on the connecting tube 271, and the sealing valve 272 is provided with an air injection port 273. The sealing valve 272 has two states: in one state, the air injection port 273 is in communication with the connecting tube 271; in the other state, the sealing valve 272 seals the connecting tube 271.

[0050] In this embodiment, as Figure 7As shown, the puncture device 3 includes a gel sleeve 31, with a first sealing ring 32 installed below the gel sleeve 31. The first sealing ring 32 is located above and fits snugly against the sealing element 2, ensuring a tight seal between the puncture device 3 and the sealing element 2. A tubular channel body 35 is connected below the gel sleeve 31, and the tubular channel body 35 is connected to a straight tube 36. A Luer connector 37 is connected below the straight tube 36. A second sealing ring 38 is provided at the connection between the straight tube 36 and the Luer connector 37. When installing the puncture device 3, a puncture needle is installed on the Luer connector 37, and the puncture needle penetrates the sealing membrane 255. The second sealing ring 38 is located below the sealing membrane 255 to ensure an airtight seal between the puncture device 3 and the sealing membrane 255. A variable diameter orifice 311 is provided above the gel sleeve 31, and the diameter of the variable diameter orifice 311 is adjustable. A stop bar 312 is also installed inside the gel sleeve 311, which limits the maximum diameter of the variable diameter orifice 311. An upper guide body 33 and a lower guide body 34 are also installed inside the gel sleeve 31. The lower guide body 34 is fixed inside the gel sleeve 31, and the upper guide body 33 is fixedly connected above the lower guide body 34, with the upper guide body 33 and the lower guide body 34 being connected through each other.

[0051] In this embodiment, the specific installation steps of the seal 2 are as follows: First, the inner base 22 is installed inside the outer base 21. During installation, the inner base 22 is first limited by the limiting strip 212, and then the inner base 22 is fixed by bolts. Then, the connecting seat 23 is connected to the inner base 22. First, the limiting groove 231 is aligned with the inner base 22, and then the connecting seat 23 is pushed into the inner base 22. The connecting seat 23 is clamped by the first elastic member 233. Then, the annular cover 24 is fixedly connected to the connecting seat 23. The mounting protrusion 242 is inserted into the connecting seat 23, and the mounting protrusion 242 is located on one side of the arc strip 234. Then, the mounting ring 26 is connected above the annular cover 24. The second elastic member 263 is located on one side of the arc strip 234 and fixed by the second elastic member 263. The limiting block 264 on the second elastic member 263 is just stuck on one side of the arc strip 234.

[0052] In this embodiment, the disposable medical multi-channel single-port trocar of the present invention is suitable for single-port multi-access laparoscopic minimally invasive surgery. Before surgery, trocars (puncturists) of different port sizes are selected; commonly used sizes are 5mm, 10mm, and 12mm. First, a percutaneous incision is made, and the lower rubber ring 12 of the protective sleeve 1 is flattened by hand. It is pushed into the incision, the upper rubber ring 12 is pulled up and turned outwards, and the protective sleeve 1 is checked for flatness. Finally, the upper rubber ring 12 is connected to the outer base 21, and the outer base 21 and its components are installed according to the above steps. The connection between the sealing cap 25 and the trocar 3 needs to be installed before surgery. The puncture needle is installed below the trocar 3, and the sealing membrane 255 is punctured at a suitable position. The number of trocars 3 is as needed. After threading and tightening the sealing cap 25 to the annular pressure cap 24, pneumoperitoneum can be established to begin the surgery. The sealing element 2 has two inflatable tubes 27 on either side. One of the tubes 27 connects to the pneumoperitoneum machine, which injects carbon dioxide into the abdominal cavity to create pneumoperitoneum. This is to provide sufficient space and a clear surgical field, avoiding accidental damage to organs and tissues. The other tube 27 connects to a negative pressure line, which can be easily opened during surgery to expel carbon dioxide from the abdominal cavity and clearly define the surgical field.

[0053] In this embodiment, the sealing cap 25 and the annular pressure cap 24 are connected by threads, which allows for easy opening of the sealing cap 25 and removal of the sample specimen during subsequent surgery. After the surgery, the insufflation tube 27 connected to the negative pressure pipeline is opened to expel carbon dioxide from the abdominal cavity. Then, the sealing cap 25 is removed, the outer base 21 is taken off, and finally, the protective sleeve 1 is removed. To ensure the installation and removal of the protective sleeve 1, a pull rope can be connected to the inside of the rubber ring 12 at the lower end of the protective sleeve 1. When removing the protective sleeve 1, simply pull the rope to remove it. This disposable medical multi-channel single-hole trocar used in this invention only requires replacing the protective sleeve 1 and the sealing membrane 255. The remaining components can be reused after high-temperature sterilization. Compared with existing disposable trocars, this significantly reduces surgical costs.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A disposable medical multi-channel single-port trocar, comprising: A protective sleeve, the protective sleeve comprising a thin film sleeve, the two ends of which are connected to rubber rings; A seal, wherein one of the rubber rings is connected to the lower part of the seal; Multiple puncture devices are mounted above the seal, and the number of puncture devices is adjustable. Its features are, The sealing element includes an outer base and an inner base, with the inner base located inside the outer base. A connecting seat is installed inside the inner base, and an annular pressure cap is fixed above the connecting seat. The annular pressure cap is threadedly connected to a sealing cap. The sealing cap contains a removable sealing membrane, through which multiple puncture instruments penetrate. The puncture device includes a gel sheath, with a first sealing ring installed below the gel sheath. The first sealing ring is located above and fits against the sealing element. A tubular channel body is connected below the gel sheath and is connected to a straight tube. A Luer connector is connected below the straight tube. A second sealing ring is present at the connection between the straight tube and the Luer connector. During puncture device installation, the Luer connector penetrates the sealing membrane, and the second sealing ring is located below the sealing membrane. The annular gland has external threads, and the sealing cap has internal threads. The external threads mate with the internal threads, wherein the external threads are incomplete threads. The outer base has four threaded holes for installing the inner base. The outer base also has limiting strips on both sides. When installing the inner base, the limiting strips first limit the inner base before fixing it in place. The outer base also has fixing grooves on both sides. The connecting seat has multiple limiting grooves for restricting rotation of the connecting seat. The connecting seat also has a first elastic member connected to the inner base. The annular pressure cap also has a mounting protrusion, on which a mounting ring is connected. The mounting ring includes a mounting hole corresponding to the mounting protrusion. A washer is also present in the center of the mounting ring, and a second elastic member is present on the outer side of the mounting ring. A limit block is connected to the second elastic member. The connector also has an arc-shaped strip, and a mounting plate is inserted into the connector, with the mounting plate located on one side of the arc-shaped strip. After the mounting ring is connected above the annular cover, the mounting ring is fixed by the second elastic member, which is located on one side of the arc-shaped strip, and the limiting block on the second elastic member is precisely locked onto the arc-shaped strip.

2. The disposable medical multi-channel single-port puncture device according to claim 1, characterized in that, The gel sleeve has a variable diameter hole at the top, the diameter of which is adjustable. A stop bar is also installed inside the gel sleeve to limit the maximum diameter of the variable diameter hole.

3. The disposable medical multi-channel single-port puncture device according to claim 2, characterized in that, The gel sleeve also contains an upper guide body and a lower guide body. The lower guide body is fixed inside the gel sleeve, and the upper guide body is fixedly connected above the lower guide body, with the upper guide body and the lower guide body being connected through each other.

4. The disposable medical multi-channel single-port puncture device according to claim 1, characterized in that, The sealing cap has multiple upper through holes, through which the puncture device is connected to the sealing membrane. The sealing cap has side through holes on both sides, and the side through holes are connected to air injection tubes.

5. The disposable medical multi-channel single-port puncture device according to claim 4, characterized in that, The air injection pipe includes a connecting pipe that is connected to a side through hole. A sealing valve is installed on the connecting pipe, and the sealing valve has an air injection hole. The sealing valve has two states: in one state, the air injection hole is in communication with the connecting pipe; in the other state, the sealing valve seals the connecting pipe.

Images