A microsuction device for neurosurgery

Abstract

The present invention discloses a microscopic suction device for neurosurgery, which includes a drainage tube. The rear end of the drainage tube is a control end connected to a negative pressure device, and the front end of the drainage tube is connected with a traction head. The traction head is provided with an inner hole axially penetrating through both ends, and the rear end of the inner hole communicates with the drainage tube. A traction protrusion is arranged on the outer side of the traction head, so as to form a traction step between the traction protrusion and the traction head close to the drainage tube. The use of the microscopic suction device includes the following steps: a. Start the negative pressure device, and the suction port at the front end of the traction head sucks the liquid in the patient's brain; b. Make the front end of the traction head approach the blood vessel to be tractioned, and make the blood vessel located at the traction step, and move the drainage tube, then the blood vessel can be tractioned. The present invention only needs to be operated by one person, and can not only suck the contents such as bleeding, exudate, and pus during the operation, but also traction and peel tissues such as blood vessels, thus facilitating the operation of brain surgery.

Description

Technical Field

[0001] The present invention relates to the technical field of medical device manufacturing, and particularly relates to a microscopic suction device for neurosurgery. Background Art

[0002] As we know, during brain surgery, on the one hand, it is necessary to aspirate contents such as bleeding, exudate, and pus during the operation, and on the other hand, it is necessary to traction and dissect tissues such as blood vessels to fully expose them in the field of view to facilitate the doctor's operation.

[0003] In the prior art, people usually use instruments such as microscopic suction heads to aspirate contents such as bleeding, exudate, and pus during the operation. Specifically, the microscopic suction head usually includes a drainage tube, a suction head provided at the front end of the drainage tube, and a negative pressure device connected to the rear end of the drainage tube. During operation, the negative pressure device makes the suction head form a negative pressure to aspirate contents such as bleeding, exudate, and pus during the operation. In addition, instruments such as nerve dissectors are used to achieve the traction and dissection of tissues such as blood vessels. That is to say, it is difficult for a doctor to operate two instruments simultaneously to complete two operations, and usually at least two people need to operate simultaneously. Since the surgical operation area of brain surgery is relatively narrow, the simultaneous operation of multiple people will cause mutual interference and then cause adverse mutual effects. In particular, for two doctors who do not have long-term tacit cooperation, the above operations are extremely difficult. For this reason, someone has tried to directly use the drainage tube of the existing microscopic suction head to traction blood vessels. It is understandable that it is extremely difficult to traction blood vessels with a drainage tube with a smooth outer wall. Summary of the Invention

[0004] The purpose of the present invention is to provide a microscopic suction device for neurosurgery, which only requires one-person operation, can not only aspirate contents such as bleeding, exudate, and pus during the operation, but also traction and dissect tissues such as blood vessels, thus facilitating the operation of brain surgery. To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A microscopic suction device for neurosurgery includes a drainage tube. The rear end of the drainage tube is a control end connected to a negative pressure device. The front end of the drainage tube is connected with a traction head. The traction head is provided with an inner hole axially penetrating through both ends. The rear end of the inner hole communicates with the drainage tube. A traction protrusion is provided on the outer side of the traction head, so as to form a traction step between the traction protrusion and the traction head close to the drainage tube. The use of the microscopic suction device includes the following steps:

[0006] a. Start the negative pressure device, and the inner hole at the front end of the traction head aspirates the liquid in the patient's brain.

[0007] b. Make the front end of the traction head close to the blood vessel to be tractioned, and make the blood vessel located at the traction step. Move the drainage tube to traction the blood vessel.

[0008] As described above, there are devices and structures similar to the microscopic suction head in the prior art, which are mainly used to suck out the liquid in the patient's brain during surgery. The present invention creatively provides a traction head at the front end of the drainage tube of the microscopic suction head, and traction protrusions are provided on the outer side of the traction head. In this way, if only the liquid in the patient's brain needs to be sucked out during the operation, we can remove the traction head, start the negative pressure device, and directly use the drainage tube to suck out the liquid in the patient's brain. If both the liquid in the patient's brain needs to be sucked out and the blood vessels need to be tractioned during the operation, the traction head can be connected to the front end of the drainage tube. At this time, the traction head with an inner hole is equivalent to an extended part of the drainage tube, and the inner hole of the traction head can suck out the liquid in the patient's brain. In particular, the traction protrusions on the outer side of the traction head can hook and traction the blood vessels to avoid the slippage of the blood vessels, and it will not affect the suction of the liquid in the patient's brain. That is to say, the present invention has the effect of serving two purposes, which is convenient for a doctor to operate during brain surgery.

[0009] Preferably, the traction head and the drainage tube are detachably connected, so as to facilitate the disassembly and assembly of the traction head during the operation to meet different surgical needs.

[0010] Preferably, the rear end of the traction head is in interference fit with the inside of the drainage tube, so that a reliable connection can be formed between the traction head and the drainage tube. In particular, it can effectively prevent the liquid sucked through the traction head from leaking out from the connection gap between the traction head and the drainage tube.

[0011] Preferably, the traction head and the drainage tube are screwed together, which is convenient for the disassembly and assembly of the traction head and the drainage tube, and can ensure the reliable connection between the traction head and the drainage tube to avoid the detachment of the traction head.

[0012] Preferably, the traction protrusion is a conical shape that gradually increases from front to back, so that the traction step has a sufficient height difference, which is beneficial to the traction of the blood vessels. At the same time, the smaller front end of the traction head is convenient for "wandering" in the patient's brain.

[0013] Preferably, a number of traction holes evenly distributed in the circumferential direction are provided at the traction step of the traction head. The traction holes penetrate the inner hole of the traction head radially, and the total area of all the traction holes is 2 / 5 - 3 / 5 of the area of the inner hole of the traction head.

[0014] When the blood vessel is located at the traction step, the negative pressure of the traction holes can adsorb the blood vessel at the traction step to avoid the slippage of the blood vessel from the traction step. In particular, the total area of all the traction holes is 2 / 5 - 3 / 5 of the area of the inner hole of the traction head. In this way, the traction holes and the inner hole can simultaneously play the role of sucking out the liquid in the patient's brain. At the same time, when the blood vessels need to be tractioned, the traction holes can form sufficient negative pressure to adsorb the blood vessels at the traction step.

[0015] When the area of all the traction holes is less than 2 / 5 of the inner hole area of the traction head, the suction of the traction holes will be too small, making it difficult to adsorb and pull the blood vessels; when the area of all the traction holes is greater than 3 / 5 of the inner hole area of the traction head, on the one hand, the adsorption force on the blood vessels will be too large, which is likely to cause additional damage to the blood vessels, and on the other hand, the suction effect of the inner hole on the liquid will be reduced.

[0016] Preferably, a control sleeve extending to the control end of the drainage tube is sleeved outside the traction head. A sealing piece is provided at the front end of the traction head. The control sleeve is connected to the sealing piece through a connecting rib. A sliding groove is provided on the traction protrusion, and the connecting rib is movably located in the corresponding sliding groove. When it is necessary to suck the liquid in the patient's brain, move the control sleeve forward to block the traction holes with the control sleeve. At this time, the sealing piece leaves the inner hole of the traction head; when it is necessary to pull the blood vessels in the patient's brain, move the control sleeve backward to expose the traction holes. At this time, the sealing piece abuts against the inner hole of the traction head.

[0017] In this solution, a control sleeve extending to the control end of the drainage tube is sleeved outside the traction head. That is to say, the control sleeve can axially move outside the drainage tube and the traction head. In this way, when the control sleeve is moved forward until it abuts against the traction protrusion, the front section of the control sleeve blocks the traction holes on the drainage tube. At this time, the negative pressure of the negative pressure device can act on the inner hole at the front end of the traction head through the drainage tube, so as to accelerate the suction of the liquid in the patient's brain and avoid the unnecessary adsorption and traction of the brain blood vessels. When the control sleeve is moved backward, the traction holes on the drainage tube are exposed. Correspondingly, the control sleeve drives the sealing piece to move backward and abut against the inner hole of the traction head through the connecting rib. At this time, under the negative pressure action of the negative pressure device, the sealing piece closely abuts against and blocks the inner hole of the traction head. Therefore, all the negative pressure of the drainage tube acts on the traction holes at the front part of the traction head, so as to enhance the adsorption and traction effect on the brain blood vessels. Correspondingly, the front end of the traction head stops sucking the liquid in the patient's brain at this time. That is to say, by moving the control sleeve back and forth, we can conveniently switch the traction head connected to the drainage tube between the liquid suction mode and the blood vessel traction mode.

[0018] It should be noted that the negative pressure formed by the negative pressure device will strengthen the backward movement of the sealing piece to abut against the inner hole of the traction head, or strengthen the control sleeve to abut against and block the traction holes, naturally improving its sealing effect. That is to say, we can make the control sleeve form a clearance fit with the drainage tube and the traction head to facilitate its forward and backward movement. In particular, the drainage tube and the control sleeve can be made of plastic hoses, and the front end of the control sleeve and the sealing piece can be made of elastic silica gel.

[0019] Therefore, the present invention has the following beneficial effects: only one person is required to operate, and both the bleeding, exudates, pus and other contents during the operation can be sucked out, and the blood vessels and other tissues can be pulled and dissected, thus facilitating the operation of neurosurgery. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the present invention.

[0021] Figure 2 is the first schematic structural diagram when the traction head traction blood vessels.

[0022] Figure 3 is a schematic structural diagram when the suction head sucks the brain fluid.

[0023] Figure 4 is the second schematic structural diagram when the traction head traction blood vessels.

[0024] In the figure: 1. Drainage tube 11. Control end 2. Negative pressure device 3. Traction head 31. Inner hole 32. Traction protrusion 321. Sliding groove 33. Traction step 34. Traction hole 4. Blood vessel 5. Control sleeve 51. Plugging piece 52. Connecting rib. Detailed Description of the Invention

[0025] The following further describes the present invention in conjunction with the drawings and specific embodiments.

[0026] As Figure 1 shown, a microsuction device for neurosurgery includes a drainage tube 1. The rear end of the drainage tube is a control end 11 connected to a negative pressure device 2. The front end of the drainage tube is connected with a traction head 3. The traction head is provided with an inner hole 31 axially penetrating through both ends, so that the traction head is tubular. The rear end of the inner hole communicates with the drainage tube. The outer side of the traction head is provided with an annular traction protrusion 32, so as to form a traction step 33 between the traction protrusion and the traction head close to the drainage tube.

[0027] The microsuction device can be used in two application scenarios. The first is that only the liquid in the patient's brain needs to be sucked during the operation. The use at this time includes the following steps: Remove the traction head at the front end of the drainage tube, start the negative pressure device, and the drainage tube can suck the liquid in the patient's brain. The medical staff can control the position of the front end of the drainage tube by manipulating the control end at the rear end of the drainage tube. The second is that during the operation, it is necessary to both suck the liquid in the patient's brain and traction blood vessels. As Figure 2 shown, the use at this time includes the following steps:

[0028] a. Start the negative pressure device, and the inner hole at the front end of the traction head connected to the drainage tube sucks the liquid in the patient's brain;

[0029] b. Make the front end of the traction head close to the blood vessel 4 to be tractioned, and make the blood vessel located at the traction step, and move the drainage tube to traction the blood vessel.

[0030] It should be noted that in this embodiment, one end of the drainage tube connected to the negative pressure device is the rear end, and the end connected to the traction head is the front end.

[0031] In addition, the present invention can be operated by one person to meet the needs of two different scenarios during the operation, thus achieving the effect of dual use of one object and facilitating the operation of neurosurgery.

[0032] Preferably, the traction head and the drainage tube are detachably connected, so as to facilitate the disassembly and assembly of the traction head during the operation to adapt to different surgical needs. Specifically, the rear end of the traction head is inserted into the drainage tube. In this way, the liquid inhaled through the traction head can be effectively prevented from leaking out from the connection gap between the traction head and the drainage tube. In addition, there is an interference fit between the rear end of the traction head and the drainage tube, so that the traction head and the drainage tube form a reliable connection and avoid falling off during use. Or, the rear end of the traction head is screwed into the drainage tube, which is convenient for the disassembly and assembly of the traction head and the drainage tube and can ensure the reliable connection between the traction head and the drainage tube.

[0033] Furthermore, the traction protrusion is a cone that gradually increases from front to back, so that there is a sufficient height difference between the traction step and the drainage tube, which is beneficial to the traction of blood vessels. At the same time, the smaller front end of the traction head is convenient for "wandering" in the patient's brain.

[0034] As a preferred solution, the traction head is provided with a plurality of traction holes 34 evenly distributed in the circumferential direction at the concave traction step. That is to say, the traction holes are arranged near the traction protrusion of the traction head, and the traction holes radially penetrate the inner hole of the traction head. In this way, when we need to traction blood vessels, first place the blood vessels at the traction step. At this time, the traction holes communicated with the drainage tube will generate a certain negative pressure, and this negative pressure can adsorb the blood vessels at the traction step to prevent the blood vessels from slipping off the traction step.

[0035] Specifically, we can make the area of all the traction holes be 2 / 5 - 3 / 5 of the area of the inner hole of the traction head, so that the traction holes and the inner hole can simultaneously play the dual functions of sucking the liquid in the patient's brain and adsorbing the blood vessels at the traction step.

[0036] Furthermore, as Figure 3 、 Figure 4 shown, a control sleeve 5 extending to the control end of the drainage tube is sleeved outside the traction head. A sealing piece 51 is provided at the front end of the traction head. The control sleeve is connected to the edge of the sealing piece through an axially extending connecting rib 52 at the front end. A sliding groove 321 is provided on the traction protrusion, and the connecting rib is movably located in the corresponding sliding groove.

[0037] In this way, when it is necessary to aspirate the fluid in the patient's brain, the control sleeve is moved forward. The control sleeve is positioned against the traction protrusion. At this time, the control sleeve blocks the traction hole, and the blocking piece leaves the inner hole of the traction head. Therefore, the inner hole of the traction head can aspirate the fluid in the patient's brain during the operation. When it is necessary to traction the blood vessels in the patient's brain, the control sleeve is moved backward. At this time, the blocking piece abuts against the inner hole of the traction head, so as to position the control sleeve. Correspondingly, the control sleeve leaves the traction hole, so that the traction hole is exposed. That is to say, the traction hole can generate a negative pressure on the blood vessels to traction the blood vessels at this time.

[0038] It should be noted that the negative pressure formed by the negative pressure device will strengthen the backward movement of the blocking piece to abut against the inner hole of the traction head, or strengthen the control sleeve to abut against and block the traction hole, naturally improving its sealing effect. That is to say, we can make the control sleeve form a clearance fit with the drainage tube and the traction head to facilitate its forward and backward movement. In addition, the outer diameter of the control sleeve should be equal to the outer diameter of the large end of the traction protrusion, and the outer diameter of the blocking piece should be equal to the outer diameter of the small end of the traction protrusion, so that the control sleeve, the blocking piece and the traction protrusion have a smooth transition when aspirating the fluid in the patient's brain. Moreover, we can set 3-4 connecting ribs and corresponding sliding grooves. In addition, the traction hole can be arranged between adjacent connecting ribs to prevent the connecting ribs from covering the traction hole and not affecting the traction of the blood vessels by the traction hole.

Claims

1. A microscopic suction device for neurosurgery, including a drainage tube. The rear end of the drainage tube is a control end connected to a negative pressure device, and it is characterized in that, The front end of the drainage tube is connected with a traction head. The traction head is provided with an inner hole axially penetrating through both ends. The rear end of the inner hole communicates with the drainage tube. A traction protrusion is arranged on the outer side of the traction head, so as to form a traction step between the traction protrusion and the traction head close to the drainage tube. The use of the micro suction device includes the following steps: a. Start the negative pressure device, and the inner hole at the front end of the traction head sucks the liquid in the patient's brain; b. Make the front end of the traction head close to the blood vessel to be tractioned, and make the blood vessel located at the traction step. Move the drainage tube, and the blood vessel can be tractioned; The traction head is provided with a plurality of traction holes evenly distributed in the circumferential direction at the traction step. The traction holes radially penetrate the inner hole of the traction head, and the area of all the traction holes is 2 / 5 - 3 / 5 of the area of the inner hole of the traction head; A control sleeve extending to the control end of the drainage tube is sleeved on the outer side of the traction head. A sealing piece is arranged at the front end of the traction head. The control sleeve is connected with the sealing piece through a connecting rib. A sliding groove is arranged on the traction protrusion, and the connecting rib is movably located in the corresponding sliding groove. When it is necessary to suck the liquid in the patient's brain, move the control sleeve forward, so that the control sleeve blocks the traction holes. At this time, the sealing piece leaves the inner hole of the traction head; when it is necessary to traction the blood vessel in the patient's brain, move the control sleeve backward, so that the traction holes are exposed. At this time, the sealing piece abuts against the inner hole of the traction head.

2. The microsuction device for neurosurgery according to claim 1, characterized in that, The traction head and the drainage tube are detachably connected.

3. The microsuction device for neurosurgery according to claim 2, characterized in that, The rear end of the traction head is in interference fit in the drainage tube.

4. The microsuction device for neurosurgery according to claim 2, wherein The traction head and the drainage tube are screwed.

5. The microsuction device for neurosurgery according to claim 4, characterized in that, The traction protrusion is a cone gradually increasing from front to back.

Images