Intraoperative tissue distraction device

Abstract

An intraoperative tissue distraction device relates to the technical field of intraoperative distraction tools and comprises a drag hook body and a liquid leading-out mechanism, and the drag hook body comprises a grab handle rod and a tissue stretching plate connected with the grab handle rod; communicated through holes are formed in the tissue stretching plate and the grab handle rod, the liquid guide-out mechanism comprises a negative pressure balloon and a drainage tube arranged in the through holes, one end of the drainage tube extends out of the grab handle rod and is communicated with the negative pressure balloon, a plurality of liquid suction holes are formed in the outer side wall of the tissue stretching plate along the outer edge of the tissue stretching plate, and the liquid suction holes are communicated with the drainage tube. According to the device, under the action of negative pressure in the negative pressure balloon, liquid around the tissue stretching plate is sucked into the drainage tube through the liquid suction holes and then converged through the drainage tube to flow to the negative pressure balloon, so that drainage of the liquid around the tissue stretching plate is achieved, and direct contact with a tissue structure is avoided due to the design of the positions of the liquid suction holes; according to the device, the operation link of using gauze for dilution is omitted, and sewing can be rapidly completed.

Description

Technical Field

[0001] The utility model relates to the technical field of intraoperative distraction tools, in particular to an intraoperative tissue distraction device. Background Art

[0002] A retractor is a commonly used intraoperative tissue distraction tool used during cesarean sections to stretch the incision and expand the view inside. The retractor is used from the moment the subcutaneous tissue is incised until the rectus abdominis fascia is sutured. This process typically takes 20-50 minutes, or even longer. Suturing the myometrium to the rectus abdominis fascia takes the longest. During this process, the subcutaneous tissue bleeds continuously, making the retractor prone to slipping. Therefore, medical staff must apply greater force to open the incision. However, due to the relatively soft tissue, the retractor's tension and pressure cause more blood to flow along the inner wall of the incision toward the outer edge of the retractor. At this point, medical staff must continuously dilute this blood with gauze, but this operation obscures the suture field, causing the suture to be interrupted, prolonging the suturing process and increasing the risk of infection. Although retractors are currently designed with fluid drainage to address this slippage issue, they are not suitable for the aforementioned cesarean section application.

[0003] For example, the existing patent number CN202220699709.5 is a gynecological surgical retractor with a body fluid drainage function. A retractor with a fluid drainage function is designed. The retractor includes a uterine retractor body, a handle end and a working end, respectively, with a waste liquid collection tube and a suction mechanism. The suction port of the suction mechanism is located on the outer wall of the working end. During use, the suction mechanism at the working end absorbs the liquid and guides it into the waste liquid collection tube through a catheter. Although the retractor can absorb body fluids, it prevents the uterine retractor body from slipping on the inner wall of the uterus, which causes the traction and stretching to be interrupted. However, when used in cesarean section surgery, since the suction port is located on the outer wall of the working end, in actual use, since the inner wall of the working end must maintain contact with the incision tissue, only part of the liquid can be sucked away during stretching and expansion. Moreover, when the incision tissue is stretched, part of the incision tissue may be sucked into the suction port, causing tissue damage. Moreover, the liquid on the outer edge of the retractor cannot be drained out, and ultimately, gauze must be used for dilution, which is still not conducive to rapid suturing. Utility Model Content

[0004] In order to solve the technical problems existing in the above-mentioned background technology, the present invention provides an intraoperative tissue distraction device.

[0005] The technical solution of this utility model is as follows:

[0006] A device for intraoperative tissue expansion includes a retractor body and a liquid outlet mechanism. The retractor body includes a handle rod and a tissue stretching plate connected thereto. Based on the above design, when in use, the operator holds the handle rod and uses the tissue stretching plate to stretch and expand the intraoperative tissue structure to expand the intraoperative field of view. For example, when used in a cesarean section, it is used to stretch the cesarean section incision to expand the field of view inside the incision, and uses the liquid outlet mechanism to outlet the liquid around the tissue stretching plate.

[0007] As the core technical concept of the present invention, the tissue stretching plate and the inside of the handle rod are provided with through holes that are interconnected. The liquid derivation mechanism includes a negative pressure balloon and a drainage tube arranged in the through hole. One end of the drainage tube extends out of the handle rod and is connected to the negative pressure balloon, so that the liquid generated during the operation can be discharged in time. A number of suction holes are opened on the outer wall of the tissue stretching plate along its outer edge, and the suction holes are connected to the drainage tube, so that the liquid generated on the periphery of the tissue stretching plate can be introduced from the suction holes opened on the tissue stretching plate into the drainage tube, and finally introduced into the negative pressure balloon by the drainage tube. The suction holes are located on the periphery of the tissue stretching plate, which avoids direct contact with the tissue during the stretching operation, reduces tissue damage, reduces the operation link of using gauze for dilution, and helps to complete the suturing quickly.

[0008] Furthermore, a spherical drainage head is provided at the outer end of the suction hole. Since the outer periphery of the tissue stretching plate is in direct contact with the tissue structure, setting it into a smooth spherical shape can avoid damage to the tissue structure. A number of drainage holes are provided on the drainage head, and the drainage holes are connected to the inside of the drainage tube. Setting multiple small drainage holes can prevent the tissue structure on the periphery of the tissue stretching plate from being damaged by the drainage holes under the action of negative pressure.

[0009] As described above, in an intraoperative tissue expansion device, the drainage tube includes a guide tube section and a capillary section. The capillary section is located inside the tissue stretching plate to adapt to the thinner thickness of the tissue stretching plate. At the same time, the negative pressure inside the capillary section can absorb the liquid, and the capillary section of the drainage tube is connected to the suction hole. The guide tube section is located inside the handle rod and is connected to the interior of the negative pressure balloon through a connecting tube. The connecting tube is a flexible tube, so that the operator can adjust the position of the connecting tube and the required bending angle as needed.

[0010] As described above, an intraoperative tissue expansion device is provided with an air outlet boss connected to the interior of the negative pressure balloon on the upper part, and the outer end of the air outlet boss is detachably connected to an end cap to facilitate the discharge of gas inside the negative pressure balloon, or to connect an external waste liquid collection mechanism to discharge the liquid inside the negative pressure balloon when necessary; the end cap is connected to the air outlet boss by threaded fitting, and its processing is simple and easy to disassemble and assemble.

[0011] In the intraoperative tissue expansion device described above, the thickness of the tissue stretching plate is 2mm-3mm. While achieving the structural strength required for stretching, the thickness of the tissue stretching plate is reduced as much as possible so that the operator can easily pick up the retractor body, and the aperture of the suction hole is set to 1mm-2mm. Providing multiple small suction holes can increase the suction area and improve the suction efficiency.

[0012] The beneficial effect of the present invention is that the negative pressure balloon utilizes the negative pressure inside it to absorb the liquid around the tissue stretching plate, wherein the liquid around the tissue stretching plate is first sucked into the drainage tube through a number of suction holes opened around the outer wall thereof, and finally flows to the negative pressure balloon through the drainage tube, thereby achieving drainage of the liquid around the tissue stretching plate, and the suction holes are located on the periphery of the tissue stretching plate, avoiding direct contact with the tissue, reducing tissue damage, and reducing the operation of using gauze for dilution, which helps to quickly complete suturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In the attached figure:

[0014] Figure 1 This is a schematic structural diagram of an intraoperative tissue distraction device according to the present invention;

[0015] Figure 2 for Figure 1 Schematic diagram of the structure of the liquid outlet mechanism;

[0016] Figure 3 for Figure 1 A in the middle is an enlarged schematic diagram;

[0017] Figure 4 for Figure 2 The enlarged schematic diagram of point B in the middle;

[0018] The components represented by the reference numerals in the figure are:

[0019] 1. Retractor body; 11. Handle rod; 12. Tissue stretching plate; 121. Liquid suction hole; 13. Through hole; 2. Liquid outlet mechanism; 21. Drainage tube; 211. Capillary section; 212. Guide tube section; 213. Connecting tube; 22. Negative pressure balloon; 221. Air outlet boss; 222. End cap; 3. Drainage head. DETAILED DESCRIPTION

[0020] Combine Figure 1The present embodiment provides an intraoperative tissue expansion device, which includes a retractor body 1 and a liquid outlet mechanism 2. The retractor body 1 includes a handle rod 11 and a tissue stretching plate 12 connected thereto. Based on the above design, when in use, the operator holds the handle rod 11 and uses the tissue stretching plate 12 to stretch and expand the intraoperative tissue structure to expand the intraoperative field of view. For example, when used in a cesarean section, it is used to stretch the cesarean section incision to expand the field of view inside the incision, and use the liquid outlet mechanism 2 to extract the liquid outside the tissue stretching plate 12.

[0021] How the liquid outlet mechanism 2 specifically outlets the liquid outside the tissue stretching plate 12 is specifically combined with Figure 1 and Figure 2 For example, the tissue stretching plate 12 and the handle rod 11 are provided with a through hole 13 that is interconnected. The liquid derivation mechanism 2 includes a negative pressure balloon 22 and a drainage tube 21 provided in the through hole 13. One end of the drainage tube 21 extends out of the handle rod 11 and is connected to the negative pressure balloon 22, so that the liquid generated during the operation can be discharged in time. A number of suction holes 121 are provided on the outer wall of the tissue stretching plate 12 along its outer edge, and the suction holes 121 are connected to the drainage tube 21, so that the liquid generated on the periphery of the tissue stretching plate 12 can be introduced into the drainage tube 21 from the suction holes 121 provided on the tissue stretching plate 12, and finally introduced into the negative pressure balloon 22 by the drainage tube 21, wherein the suction holes 121 are located on the periphery of the tissue stretching plate 12, which avoids direct contact with the tissue during the stretching operation, reduces tissue damage, reduces the operation link of using gauze for dilution, and helps to complete the suturing quickly.

[0022] In this embodiment, the drainage of the liquid is achieved by manually pressing the negative pressure balloon 22, so that the liquid can be drained when needed and the control is convenient. The negative pressure balloon 22 is made of a material with resilience, such as rubber material or elastic plastic. It can be flattened by hand and will slowly return to its original shape after being flattened. Preferably, in order to be able to observe the situation inside the negative pressure balloon 22 in real time, the balloon body of the negative pressure balloon 22 is made of transparent material. The shape of the balloon body can be pear-shaped, olive-shaped or spherical. Preferably, anti-slip ridges are provided on the outer periphery of the balloon body to prevent slipping when pinched by hand.

[0023] As an implementation method, a spherical drainage head 3 is provided at the outer end of the suction hole 121. Since the outer periphery of the tissue stretching plate 12 is in direct contact with the tissue structure, setting it into a smooth spherical shape can avoid damage to the tissue structure. A plurality of drainage holes are provided on the drainage head 3, and the drainage holes are connected to the inside of the drainage tube 21. Providing multiple small drainage holes can prevent the tissue structure on the periphery of the tissue stretching plate 12 from being damaged by the drainage holes under the action of negative pressure.

[0024] In this embodiment, the thickness of the tissue stretching plate 12 is 2mm-3mm. While achieving the structural strength required for stretching, the thickness of the tissue stretching plate 12 is reduced as much as possible so that the operator can easily pick up the retractor body 1, and the aperture of the suction hole 121 is set to 1mm-2mm. Providing multiple small suction holes 121 can increase the suction area and improve the suction efficiency.

[0025] Combine Figure 2 The drainage tube 21 includes a guide tube section 212 and a capillary section 211. The capillary section 211 is located inside the tissue stretching plate 12 to adapt to the thinner thickness of the tissue stretching plate 12. At the same time, the negative pressure inside the capillary section 211 can absorb the liquid, and the capillary section 211 of the drainage tube 21 is connected to the suction hole 121. The guide tube section 212 is located inside the handle rod 11 and is connected to the interior of the negative pressure balloon 22 through the connecting tube 213. The connecting tube 213 is a flexible tube so that the operator can adjust the position of the connecting tube 213 and the required bending angle as needed.

[0026] In this embodiment, the handle rod 11 and the tissue stretching plate 12 are manufactured as one piece, which includes precision casting, and the through hole 13 and the suction hole 121 are formed during the molding process. After the handle rod 11 and the tissue stretching plate 12 are manufactured as one piece, medical plastic is used to hot-melt the guide tube section 212 and the capillary section 211 in the through hole 13, and the hot-melt process includes but is not limited to hot air or heat radiation; after completing the above steps, the suction hole 121 and the capillary section 211 are opened along the suction hole 121, and the punching method includes but is not limited to drilling with a small drill bit.

[0027] Combine Figure 3 The upper part of the negative pressure balloon 22 is provided with an air outlet boss 221 connected to its interior, and the outer end of the air outlet boss 221 is detachably connected to an end cap 222. When in use, the air in the negative pressure balloon 22 is discharged through the air outlet boss 221 and then blocked with the end cap 222. The air pressure in the balloon body of the negative pressure balloon 22 will become negative pressure, thereby sucking liquid; at the same time, through the designed air outlet boss 221, an external waste liquid collection mechanism can also be connected when necessary to discharge the liquid inside the negative pressure balloon 22; in addition, the end cap 222 is connected to the air outlet boss 221 by threaded fitting, and its processing is simple and easy to assemble and disassemble.

[0028] In order to ensure that the air outlet of the air outlet boss 221 does not release pressure, a sealing gasket is installed between the end cover 222 and the air outlet of the air outlet boss 221. The end cover 222 presses the sealing gasket tightly against the end surface of the air outlet.

[0029] Combine Figure 4The guide tube section 212 and the connecting tube 213 are detachably connected to facilitate the removal or replacement of the negative pressure balloon 22, and the guide tube section 212 and the capillary section 211 can be reused.

Claims

1. An intraoperative tissue distraction device, characterized in that: It comprises a retractor body (1) and a liquid outlet mechanism (2); The retractor body (1) comprises a handle rod (11) and a tissue stretching plate (12) connected thereto, wherein the tissue stretching plate (12) and the handle rod (11) are provided with through holes (13) communicating with each other. The liquid outlet mechanism (2) includes a negative pressure balloon (22) and a drainage tube (21) arranged in the through hole (13), one end of the drainage tube (21) extends out of the handle rod (11) and is connected to the negative pressure balloon (22), and a plurality of suction holes (121) are provided on the outer wall of the tissue stretching plate (12) along its outer edge, and the suction holes (121) are connected to the drainage tube (21).

2. The intraoperative tissue distraction device according to claim 1, characterized in that: A spherical drainage head (3) is provided at the outer end of the liquid suction hole (121), and a plurality of drainage holes are provided on the drainage head (3).

3. The intraoperative tissue distraction device according to claim 1, characterized in that: The drainage tube (21) comprises a guide tube section (212) and a capillary section (211); the capillary section (211) is located inside the tissue stretching plate (12) and is in communication with the liquid suction hole (121).

4. The intraoperative tissue distraction device according to claim 3, characterized in that: The guide tube section (212) is located inside the handle rod (11) and is connected to the interior of the negative pressure balloon (22) through a connecting tube (213).

5. The intraoperative tissue distraction device according to claim 4, characterized in that: The connecting pipe (213) is a flexible pipe.

6. The intraoperative tissue distraction device according to claim 1, characterized in that: An air outlet boss (221) communicating with the interior of the negative pressure balloon (22) is provided on the upper portion of the negative pressure balloon (22), and an end cap (222) is detachably connected to the outer end of the air outlet boss (221).

7. The intraoperative tissue distraction device according to claim 6, characterized in that: The end cover (222) is connected to the air outlet boss (221) through threaded engagement.

8. The intraoperative tissue distraction device according to any one of claims 1 to 7, characterized in that: The thickness of the tissue stretching plate (12) is 2mm-3mm.

9. The intraoperative tissue distraction device according to claim 8, characterized in that: The diameter of the liquid suction hole (121) is 1 mm to 2 mm.

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