CN115024771B

CN115024771B - Aspirator tube for spinal surgery

Info

Publication number: CN115024771B
Application number: CN202210600901.9A
Authority: CN
Inventors: 丁凡; 张学俊; 霍继东
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2024-05-03
Anticipated expiration: 2042-05-30
Also published as: CN115024771A

Abstract

The application relates to the field of surgical instruments, and particularly discloses an aspirator tube for spinal surgery, which comprises a head end, a tube body and a tail end, wherein the head end, the tube body and the tail end are sequentially communicated, the tail end is used for being connected with an aspirator, a plurality of aspiration holes communicated with an inner cavity of the aspirator are formed in the head end, a suction control structure is arranged on the tube body, the head end comprises a straight-through part and a bending part which are integrally formed, the free end of the bending part is closed, an included angle is formed between the straight-through part and the bending part, the bending part is flat, and a flat area is arranged on one side of the bending part, which is away from the straight-through part; the suction holes comprise a first suction hole arranged at the free end of the bending part and a second suction hole arranged at the peripheral wall of the straight-through part, the side wall of the bending part adjacent to the straight-through part is also provided with the second suction hole, the first suction hole is a long hole, the aperture of the first suction hole along the flat thickness direction of the bending part is 1-1.8 mm, and the aperture of the second suction hole is 1-1.8 mm. The application has the effects of avoiding the blockage of the suction hole without replacing special instruments for many times when the spine surgery is continuously performed.

Description

Aspirator tube for spinal surgery

Technical Field

The application relates to the field of surgical instruments, in particular to an aspirator tube for spinal surgery.

Background

The aspirator tube is a commonly used instrument in spinal surgery, is mainly used for sucking bleeding in the surgical process, liquefied tissue fluid, smoke dust generated in the electric knife cauterization process and the like, prevents the fluid from shielding the surgical field, prevents surgical personnel from sucking harmful gas and the like, and is connected with an air suction hose of the aspirator when in use. In spinal surgery, a lumbar disc excision and a vertebral canal decompression are often needed, an intervertebral disc needs to be excised in the surgery, and when the intervertebral disc reamer is used for treating the intervertebral disc, a large amount of broken nucleus pulposus and fibrous ring tissues can be generated when the intervertebral disc reamer is used for treating an intervertebral disc, so that the suction device is easy to be blocked; in addition, when the upper and lower endplates are treated, a large amount of scraps are easily generated, and at the same time, when the bleeding in the operation is more, the operation space is small due to the small operation field, if the aspirator is often blocked, the operation process is affected, and even the nerves, the dura mater and the like can be damaged due to poor operation field, so that the aperture of the suction hole of the aspirator needs to be set to be large enough.

And, after the vertebral canal decompression is accomplished, still need to carry out backbone bone grafting fusion, implant cancellous bone grain and use special apparatus compaction in the bone grafting process, still need continue residue in the suction art, ooze blood simultaneously to ensure bone grain compactness. However, the diameter of bone particles is 2-5mm, and the inner diameter of the mouth of the current common aspirator is about 2-5mm, so that the aspirator tube with a large-aperture aspiration hole is easy to suck away the bone particles, and the bone grafting quantity is affected; the aspirator tube using the smaller bore aspiration holes is easily blocked by bone particles or the above-mentioned nucleus pulposus and annulus fibrosus tissues, and at this time, the aspirator tube needs to be removed, and the bone particles can be removed using a special-purpose passer bar or syringe. Thus, the operation time is prolonged by multiple times of operation, the pollution probability in the operation process is increased, the bleeding amount is increased, and the occurrence probability of postoperative complications is increased.

Disclosure of Invention

In order to solve the problems that the suction tube is blocked frequently and a special instrument needs to be replaced to press bones during the operation of the spinal surgery, the application provides the suction tube for the spinal surgery.

The application provides an aspirator tube for spinal surgery, which adopts the following technical scheme:

The suction device tube for the spinal surgery comprises a head end, a tube body and a tail end, wherein the head end, the tube body and the tail end are sequentially communicated, the tail end is used for being connected with the suction device, a plurality of suction holes communicated with an inner cavity of the head end are formed in the head end, a suction control structure is arranged on the tube body, the head end comprises a straight-through part and a bending part which are integrally formed, the free end of the bending part is sealed, an included angle is formed between the straight-through part and the bending part, and the bending part is flat, and a flat area is arranged on one side of the bending part, which is away from the straight-through part;

The suction holes comprise a first suction hole formed in the free end of the bending part and a second suction hole formed in the peripheral wall of the straight-through part, the second suction hole is also formed in the side wall, adjacent to the straight-through part, of the bending part, the first suction hole is a long hole, the aperture of the first suction hole in the flat thickness direction of the bending part is 1-1.8 mm, and the aperture of the second suction hole is 1-1.8 mm.

By adopting the technical scheme, when the application is used, the tail end is firstly connected with the air suction hose of the aspirator, the head end is extended into an operation area in the process of performing lumbar discectomy and interbody fusion, and the aspirator is started, so that negative pressure can be formed at the first suction hole and the plurality of second suction holes of the head end, and broken nucleus pulposus, fibrous ring tissues, endplate fragments and the like in the operation area are sucked into the tube body; in this in-process, because first suction hole is slot hole form, its actual opening area is greater than the second suction hole aperture far away, consequently even a plurality of second suction holes are blockked up the back, first suction hole still can keep better suction effect, can reduce the aspirator pipe by a wide margin and use the probability that suction hole takes place to block up when in lumbar discectomy and interbody fusion.

In the process of performing the spine bone grafting fusion operation, after bone particles are implanted into an operation position, the bone particles need to be compacted, and at the moment, the bent part on the head end is provided with a straight area, so that the bent part can be directly used for compacting the bone particles, a special instrument is not required to be replaced after the aspirator tube is taken out, and the reduction of operation efficiency and infection risk caused by the need of replacing the surgical instrument for a plurality of times in the operation process can be effectively avoided; in the process, the apertures of the first suction hole and the second suction hole are smaller than the particle size of bone grafting particles, the first suction hole and the second suction hole can also keep the suction effect on blood seepage in operation at any time, the compactness in the bone maintaining process is further ensured, and simultaneously, bone grafting particles with larger particle size are not sucked into the tube body, so that the bone grafting amount in a bone grafting operation is ensured.

And because the head end is formed by the straight-through part and the bending part with an included angle between the two parts, the application can also be used for pulling the dura mater or the nerve root to one side to protect the dura mater or the nerve root when the vertebral canal decompression operation is performed.

Therefore, when spine surgery is performed, namely, spine bone grafting fusion operation of lumbar discectomy and intervertebral fusion operation is performed in sequence, the application can not only play roles of sucking residues and bleeding after operation, but also play roles of nerve drag hook and bone grain compaction, so that surgical instruments do not need to be replaced for multiple times according to different surgical scenes, the possibility of infection of patients is greatly reduced, and the operation efficiency is greatly improved.

Optionally, the included angle between the straight-through part and the bending part is 85-120 degrees.

By adopting the technical scheme, the included angle between the straight-through part and the bending part is limited in the range, so that the head end of the application can effectively ensure that the function of pulling nerves or dura mater can be realized, and the effect of pressing bones can be realized.

Optionally, the tube body comprises a head tube and a tail tube, and the suction control structure is arranged on the tail tube;

the head pipe is made of medical stainless steel or titanium alloy, and the tail pipe is made of medical engineering plastic.

By adopting the technical scheme, one part of the pipe body is made of medical stainless steel or titanium alloy which can invade human bodies, and the other part of the pipe body is made of medical engineering plastic with lower cost, so that the production cost and the use cost can be reduced on the premise of ensuring that the pipe body meets medical standards, and the pipe body is favorable for market popularization.

Optionally, the suction control structure comprises an adjusting hole penetrating through the peripheral wall of the pipe body and an adjusting piece sliding along the axial direction of the pipe body, the area of the adjusting piece attached to one side of the pipe body is larger than the opening area of the adjusting hole, and the adjusting hole is a long hole and the length direction of the adjusting hole is arranged along the axial direction of the pipe body;

the pipe body is provided with a limiting mechanism for limiting the adjusting piece to be attached to the peripheral wall of the pipe body to slide.

By adopting the technical scheme, the limiting mechanism can enable the adjusting piece to be tightly attached to the outer wall of the pipe body so as to reduce the gap between the adjusting piece and the outer wall of the pipe body, so that when the adjusting piece slides on the pipe body, the area of the adjusting hole can be blocked by the adjusting piece, namely the aperture of the adjusting hole, which is actually communicated with the outside air, can be changed, the size of the negative pressure of the suction hole at the head end can be changed, namely the suction force of the suction device for sucking residues after operation is changed, an operator does not need to additionally adjust the suction device, and the convenience and the accuracy of suction force adjustment of the suction hole are improved.

Optionally, a reducing part is arranged in the inner cavity of the pipe body, and the reducing part is arranged at one side of the adjusting hole close to the tail end.

By adopting the technical scheme, when residues after operation are sucked, in the process that the air flow in the pipe body passes through the diameter-reducing part along the direction from the head end to the tail end, the cross section area of the pipe body, which is close to one side of the tail end, of the pipe body is increased, and a low negative pressure area is formed at the cross section area, so that the flow speed of the air flow is increased in the process of passing through the diameter-reducing part; therefore, in the process that the air flow carries residues after operation and passes through the adjusting holes, the first aspect can rapidly pass through the area of the pipe body provided with the adjusting holes under the action of high-speed air flow; the low negative pressure area at the rear part of the reducing part in the second aspect can form a strong suction effect on the airflow at the front part of the reducing part and the postoperative residues, so that the probability of the postoperative residues flowing out from the self-adjusting holes when the postoperative residues pass through the area of the pipe body provided with the adjusting holes is greatly reduced, the cleanliness of the application in the application process is ensured as much as possible, and the probability of pollution to the operation environment after the postoperative residues flow out from the adjusting holes is reduced.

Optionally, a baffle plate penetrating the adjusting hole and extending into the inner cavity of the pipe body is fixedly connected to one side of the adjusting plate, which is close to the pipe body;

The baffle plate extends along the suction direction of the air flow in the pipe body, and a gap is formed between the baffle plate and the adjacent inner cavity wall of the pipe body.

By adopting the technical scheme, when residues after operation are sucked, in the process that the air flow in the pipe body passes through the reduced diameter part along the direction from the head end to the tail end, the baffle plates shield the actual opening part of the adjusting hole, so that the probability that the residues after operation flow out from the adjusting hole when passing through the area of the pipe body provided with the adjusting hole can be effectively avoided; on the other hand, the external air flow can be sucked into the inner cavity of the pipe body from the actual opening part of the self-adjusting hole and the gap between the baffle plate and the inner wall of the pipe body, and the suction force of the suction force control structure on the suction force of the suction hole can be effectively adjusted.

Optionally, the width of the baffle plate along the width direction of the adjusting hole is larger than the width of the adjusting hole, and the part of the baffle plate exceeding the adjusting hole area along the width direction of the adjusting hole is made of soft materials;

the baffle plate is in a curved arc shape along the axial direction of the pipe body, and the outer arc part of the baffle plate is close to the axial line of the pipe body.

By adopting the technical scheme, the width of the baffle is larger than the width of the adjusting hole, the adjusting hole can be more comprehensively protected, the edge part of the baffle in the width direction is made of soft materials, the baffle can be smoothly arranged in the pipe body from the adjusting hole, the adjusting plate, the baffle and the pipe body can be independently processed, the production cost is effectively controlled, and the disposable requirement of the application in use is more met.

When the baffle is in an arc shape, the cross section of the inner cavity of the tube body at the position of the biggest curved surface of the arc part of the baffle is reduced, so that the flow speed is increased when the air flow carries the postoperative residue to pass through the area with reduced cross section, and the possibility that the postoperative residue flows out of the adjusting hole from the gap between the baffle and the wall of the tube body cavity in the process of passing through the tube body can be further avoided.

Optionally, the stop gear includes that the interval sets up spacing piece on the body perisporium, be equipped with on the spacing piece and be used for improving the damping module of regulating plate sliding resistance.

By adopting the technical scheme, when the adjusting piece is slid to adjust the actual opening area of the adjusting hole, the damping component can play a certain damping effect on the adjusting piece, so that the adjusting piece can be kept at the adjusting position under the action of no external force after the adjustment is finished, and the convenience of the adjusting piece in use is improved.

Optionally, the damping subassembly including the rigid coupling in the shifting block on the regulating plate, spacing piece is followed the body axial lateral wall with shifting block supports tightly and both supports tightly and is provided with protruding and the recess of looks adaptation respectively, the recess is equipped with a plurality of and follows the body axial is arranged in proper order.

Through adopting above-mentioned technical scheme, when adjusting the regulating plate, only need slide the shifting block, can realize the axial smooth action of regulating plate along the body, at this in-process, protruding and a plurality of recess block in proper order, can play the damping effect to the shifting block, also can play the location effect, improved the regulation precision and the stability of regulating plate.

Optionally, the length dimension of the bending part is 6-10 mm, and the thickness dimension of the bending part in the flat direction is 3.5-5 mm.

By adopting the technical scheme, the head end can perform postoperative residue suction, nerve traction or dura mater or bone pressing operation in a small-space operation region.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The first suction hole is designed to be long-hole-shaped, and the minimum aperture of the first suction hole is smaller than the grain diameter of bone grains, so that the probability of blocking the suction hole is greatly reduced when the application is used for lumbar discectomy and interbody fusion; because of the arrangement of the bending part and the straight-through part, the application can also be used for traction of dura mater and nerve roots when the vertebral canal decompression operation is carried out, or for sucking blood seepage while pressing bones when the spine bone grafting fusion operation is carried out; therefore, the surgical instruments do not need to be replaced for many times when the continuous implementation of the operation is carried out, the possibility of infection of a patient is greatly reduced, and the operation efficiency is greatly improved;

2. When the adjusting sheet slides on the tube body, the area of the adjusting hole can be changed by the adjusting sheet, namely the aperture of the adjusting hole, which is actually communicated with the outside air, can be changed, so that the negative pressure of the suction hole at the head end can be changed, namely the suction force of the suction device for sucking the residues after the operation is changed, an operator does not need to additionally adjust the suction device, and the convenience and the accuracy of suction force adjustment of the suction hole are improved;

3. The reducing part is arranged in the inner cavity of the tube body, so that the flow speed of the air flow is increased in the process of passing through the reducing part, and the first aspect of the postoperative residues can rapidly pass through the area of the tube body provided with the adjusting hole under the action of high-speed air flow; the low negative pressure area at the rear part of the reducing part can form a strong suction effect on the airflow at the front part of the reducing part and the postoperative residues, so that the probability of the postoperative residues flowing out of the self-regulating holes when the postoperative residues pass through the area of the pipe body provided with the regulating holes is greatly reduced, the cleanliness of the application in the application process is ensured as much as possible, and the probability of pollution to the operation environment after the postoperative residues flow out of the regulating holes is reduced;

4. The setting of separation blade can shelter from the actual opening position of regulation hole, can effectively avoid postoperative residue to be equipped with the probability that the self-regulating hole flows when the region of regulation hole when crossing the body to when further establishing the separation blade to arcuation, the body cavity is located the cross sectional area of the biggest curved surface department of separation blade arc department and reduces, so the air current carries the increase of velocity of flow when the region that this cross sectional area reduces of postoperative residue, also can further avoid the in-process that the postoperative residue walked from separation blade and body cavity wall between the clearance outflow regulation hole in the body.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a headend according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of another view of the headend according to an embodiment of the present application.

Fig. 4 is a schematic structural view mainly used for showing the suction control structure according to the embodiment of the present application.

Fig. 5 is a schematic cross-sectional view taken along line A-A of fig. 4.

Fig. 6 is a schematic structural view of the limiting plate integrally formed on the console according to the embodiment of the present application.

Reference numerals: 1. a headend; 11. a straight-through part; 12. a bending part; 13. a flat region; 2. a tube body; 21. a head pipe; 22. a final tube; 23. a console; 3. a terminal end; 31. a connecting pipe; 32. a tightening ring; 41. a first suction hole; 42. a second suction hole; 51. an adjustment aperture; 52. a regulating piece; 53. a reduced diameter portion; 54. a baffle; 55. a limiting piece; 551. a limit groove; 552. a mounting ring; 561. a shifting block; 562. a protrusion; 563. a groove.

Detailed Description

The application is described in further detail below with reference to fig. 1-6.

The embodiment of the application discloses an aspirator tube for spinal surgery. Referring to fig. 1, the aspirator tube for spinal surgery includes a head end 1, a tube body 2, and a tail end 3 connected with the aspirator, wherein the head end 1 is provided with a plurality of aspiration holes communicated with the inner cavity of the aspiration holes, and the tube body 2 is provided with an aspiration control structure. The head end 1 comprises an integrally formed through part 11 and a bending part 12, the bending part 12 is flat, straight areas 13 are formed in the side walls, close to and away from the through part 11, of the bending part 12, and the free ends of the bending part 12 are closed.

Meanwhile, an included angle is formed between the straight-through part 11 and the bending part 12, the included angle is 85-120 degrees, and can be 90 degrees, 105 degrees, 115 degrees or the like specifically, and the included angle is selected to be 90 degrees in the embodiment. Based on the consideration of the operation space, the outer diameter of the pipe body 2 is selected to be 4-5.5 mm, and a reducing transition part is arranged at one end of the pipe body 2 communicated with the straight-through part 11; the length of the bending part 12 is 6-10 mm, 8mm in the embodiment; the thickness dimension of the bending portion 12 in the flat direction is 3.5 to 5mm, and in this embodiment, 4mm is selected.

Referring to fig. 2 and 3, the suction holes include a first suction hole 41 formed at the free end of the bent portion 12 and a second suction hole 42 formed in the peripheral wall of the through portion 11, and the second suction hole 42 is also formed in the side wall of the bent portion 12 adjacent to the through portion 11, wherein the first suction hole 41 is a long hole, the aperture of the first suction hole 41 in the flat thickness direction of the bent portion 12 is 1-1.8 mm, the aperture of the second suction hole 42 is 1-1.8 mm, the minimum aperture of the second suction hole 42 and the first suction hole 41 in actual arrangement is identical, and the minimum aperture of the second suction hole 42 and the first suction hole 41 can be 1.2mm, 1.5mm, 1.6mm, and the like, and in this embodiment, the aperture of the first suction hole is 1.5 mm.

So configured, in use of the present application, the distal end 3 is first connected to the aspiration hose of the aspirator, and during the lumbar discectomy and interbody fusion procedures, the head end 1 is advanced into the operative field, and the aspirator is activated to create a negative pressure at the first suction hole 41 and the plurality of second suction holes 42 of the head end 1 to aspirate the fractured nucleus pulposus, annulus fibrosus tissue, endplate debris, etc. in the operative field into the tubular body 2. In this process, since the first suction hole 41 is long hole-shaped, and its actual opening area is much larger than the aperture of the second suction hole 42, even if the plurality of second suction holes 42 are blocked, the first suction hole 41 still can maintain a good suction effect, and the probability of blocking the suction hole when the suction device tube is applied to lumbar discectomy and interbody fusion can be greatly reduced.

And then in the process of performing the spine bone grafting fusion operation, after bone particles are implanted into an operation position, the bone particles need to be compacted, at the moment, as the straight area 13 is arranged on the bending part 12 on the head end 1, the bending part 12 can be directly used for compacting the bone particles, and special instruments are not required to be replaced after the aspirator tube is taken out, so that the reduction of operation efficiency and infection risk caused by the need of replacing the surgical instruments for many times in the operation process can be effectively avoided. In the process, the apertures of the first suction holes 41 and the second suction holes 42 are smaller than the particle size of bone grafting particles, so that the suction effect of the first suction holes 41 and the second suction holes 42 on blood seepage in the operation can be maintained at any time, the compactness in the bone maintaining process is further ensured, and meanwhile, bone grafting particles with larger particle size cannot be sucked into the tube body 2, and the bone grafting amount in the bone grafting operation is ensured.

And because the head end 1 is formed by the straight part 11 and the bending part 12 with an included angle between the two parts, the application can also be used for pulling the dura mater or the nerve root to one side to protect the dura mater or the nerve root when the vertebral canal decompression operation is carried out. Therefore, when spine surgery is performed, namely, spine bone grafting fusion operation of lumbar discectomy and intervertebral fusion operation is performed in sequence, the application can not only play roles of sucking residues and bleeding after operation, but also play roles of nerve drag hook and bone grain compaction, thereby avoiding the need of replacing surgical instruments for multiple times according to different surgical scenes, greatly reducing the possibility of infection of patients, greatly improving the operation efficiency and having great significance for improving the operation quality.

During actual operation, although the aspirator is provided with a suction adjusting system, the conditions are changeable during actual operation, an operator needs to accurately adjust the suction force of the aspirator tube, and the aspirator is convenient to adjust, so that the aspirator with a far operation range is obviously unfavorable for convenient adjustment of the suction force. Therefore, referring to fig. 4, the suction control structure includes an adjusting hole 51 penetrating through the peripheral wall of the tube 2 and an adjusting piece 52 sliding along the axial direction of the tube 2, the area of the adjusting piece 52 attached to one side of the tube 2 is larger than the opening area of the adjusting hole 51, the adjusting hole 51 is a long hole, and the length direction of the adjusting hole is arranged along the axial direction of the tube 2; the pipe body 2 is provided with a limiting mechanism for limiting the sliding of the adjusting piece 52 attached to the peripheral wall of the pipe body 2. In practical setting, in order to facilitate the operation of the suction control structure by the operator, the tube body 2 is integrally formed with a flat console 23 at the position of the adjusting hole 51, and the adjusting hole 51 is disposed on the largest plane of the console 23.

Therefore, the limiting mechanism can enable the adjusting piece 52 to be tightly attached to the outer wall of the control console 23, so that gaps between the adjusting piece 52 and the outer surface of the control console 23 are reduced, when the adjusting piece 52 slides on the control console 23, the area of the adjusting hole 51 can be changed by changing the adjusting piece 52, namely, the aperture of the adjusting hole 51, which is actually communicated with the outside air, is changed, and therefore, the negative pressure at the suction hole of the head end 1 can be changed, namely, the suction force of the suction device for sucking residues after operation is changed, an operator does not need to additionally adjust the suction device, and the convenience and the accuracy of suction force adjustment of the suction hole are improved.

However, in the actual use process, since the sucked blood, the crushed nucleus pulposus, the fibrous ring tissues and other postoperative residues need to be sucked by means of the suction force of the air flow when flowing in the tube body 2, when the suction force of the aspirator tube is large, the postoperative residues with different densities easily form turbulence in the inner cavity of the tube body 2, so that part of residues can splash out of the adjusting holes 51 when passing through the exposed parts of the adjusting holes 51. This is particularly true when the suction of the aspirator tube is turned down at the point of the aspiration completion, and the residues are easily oozed out of the adjustment hole 51 even after the sudden loss of the air flow support, especially when the tube connecting the aspirator and the distal end 3 is bent during the aspiration; and when the postoperative residues flowing out of the self-adjusting holes 51 drip on the outer wall of the tube body 2, a great health and safety hazard exists, and a great secondary infection risk exists for patients. In view of this, the tube body 2 is provided with an anti-leakage structure at the adjusting hole 51 for preventing leakage of the postoperative residue.

In one embodiment, referring to fig. 5, the anti-leakage structure includes a reduced diameter portion 53 disposed in the inner cavity of the tube body 2, the reduced diameter portion 53 is disposed on a side of the adjusting hole 51 near the end 3, the reduced diameter portion 53 is formed in a ring shape coaxial with and integrally formed with the tube body 2, and the reduced neck portion has a transition surface along the axial direction of the tube body 2.

Therefore, when residues after operation are sucked, in the process that the air flow in the pipe body 2 passes through the reduced diameter part 53 along the direction from the head end 1 to the tail end 3, as the sectional area of the pipe cavity of the pipe body 2 at the side, close to the tail end 3, of the reduced diameter part 53 is increased, a low negative pressure area is formed, and the flow speed of the air flow is increased in the process of passing through the reduced diameter part 53; so that the air flow carries the residues after operation and can quickly pass through the area of the pipe body 2 provided with the adjusting hole 51 under the action of high-speed air flow in the process of passing through the adjusting hole 51; the low negative pressure area at the rear of the diameter reducing part 53 in the second aspect can form a strong suction effect on the airflow at the front of the diameter reducing part 53 and the postoperative residues, so that the probability of the postoperative residues flowing out of the self-adjusting holes 51 when the postoperative residues pass through the area of the pipe body 2 provided with the adjusting holes 51 is greatly reduced, the cleanliness of the application in the application process is ensured as much as possible, and the probability of pollution to the operation environment after the postoperative residues flow out of the adjusting holes 51 is reduced.

In another embodiment, referring to fig. 5 as well, the anti-leakage structure comprises a baffle plate 54 penetrating the adjusting hole 51 and extending into the inner cavity of the pipe body 2, the baffle plate 54 is fixedly connected to one side of the adjusting plate 52 close to the pipe body 2, and the connection part of the baffle plate 54 and the adjusting plate 52 is a transitional cambered surface; the baffle plate 54 extends along the suction direction of the air flow in the pipe body 2, and a gap is formed between the baffle plate 54 and the adjacent inner cavity wall of the pipe body 2.

Therefore, when the application sucks the residues after the operation, in the process that the air flow in the pipe body 2 passes through the reduced diameter part 53 along the direction from the head end 1 to the tail end 3, the baffle plate 54 shields the actual opening part of the adjusting hole 51, so that on one hand, the probability that the residues after the operation flow out from the adjusting hole 51 when passing through the area of the pipe body 2 provided with the adjusting hole 51 can be effectively avoided; on the other hand, the external air flow can be sucked into the inner cavity of the pipe body 2 from the actual opening part of the adjusting hole 51 and the gap between the baffle plate 54 and the inner wall of the pipe body 2, and the effective adjustment of the suction force of the suction hole by the suction force control structure can be ensured.

More specifically, the width of the baffle plate 54 in the hole width direction of the adjustment hole 51 is larger than the hole width of the adjustment hole 51, and the portion of the baffle plate 54 beyond the area of the adjustment hole 51 in the hole width direction of the adjustment hole 51 is made of soft material, and in order to ensure the blocking effect of the baffle plate 54, the length of the baffle plate 54 is smaller than but close to the length of the adjustment hole 51; it should be further clear that the connection portion between the baffle plate 54 and the adjusting plate 52 and the central line portion in the length direction of the baffle plate 54 are made of hard plastic, and the two sides in the width direction of the baffle plate 54 are made of soft rubber, such as silicone rubber, so that the baffle plate 54 with a large area can be smoothly inserted into the inner cavity of the pipe body 2 from the adjusting hole 51, and convenient installation of the baffle plate 54 is realized. Therefore, the adjusting sheet 52, the baffle sheet 54 and the pipe body 2 can be independently processed, the production cost is effectively controlled, and the disposable requirements of the application in use are more met.

In order to make the baffle plate 54 extend into the inner cavity of the pipe body 2 to have the effect of the diameter-reducing portion 53 in the above embodiment, referring to fig. 5, the baffle plate 54 may be further configured to have a curved arc shape along the axial direction of the pipe body 2 and have an outer arc portion close to the axis of the pipe body 2.

Then the baffle plate 54 is in an arc shape, the cross-sectional area of the inner cavity of the pipe body 2 at the biggest curved surface of the arc part of the baffle plate 54 is reduced, so that the flow velocity is increased when the air flow carries the postoperative residue to pass through the area with reduced cross-sectional area, the possibility that the postoperative residue flows out of the adjusting hole 51 from the gap between the baffle plate 54 and the cavity wall of the pipe body 2 in the process of passing in the pipe body 2 can be further avoided, and the postoperative residue leakage prevention effect of the leakage prevention structure is further improved.

In order to ensure that the aspirator tube of the application meets the cost control requirement of disposable use and also ensures the convenience of assembling and using the aspirator tube of the application. Referring to fig. 1, the tube body 2 includes a head tube 21 and a tail tube 22, the head tube 21 is made of medical stainless steel or titanium alloy, the tail tube 22 is made of medical engineering plastic, the console 23 and the tail tube 22 are integrally formed by the same material, and the head tube 21 and the tail tube 22 can be in sealing connection in a mode of screwing and adding a sealing ring, or can be in sealing and clamping connection in a mode of clamping and adding a sealing ring. The suction control structure is arranged on the tail pipe 22, the tail end 3 comprises a connecting pipe 31 which is integrally formed on the tail pipe 22 and has a pipe diameter smaller than that of the tail pipe 22, a plurality of supporting rings 32 are integrally formed on the outer wall of the connecting pipe 31, and one side, deviating from the head pipe 21, of the supporting rings 32 is provided with an inclined plane.

Referring to fig. 4 and 6, the above-mentioned limiting mechanism includes limiting pieces 55 disposed on the peripheral wall of the console 23 at intervals, the limiting pieces 55 are long and axially disposed along the end pipe 22, damping components for improving sliding resistance of the adjusting piece 52 are disposed on the limiting pieces 55, and the limiting pieces 55 may be integrally formed on the console 23, or may be sleeved between the end pipe 22 and the head pipe 21 by means of detachable structures of the head pipe 21 and the end pipe 22.

Referring to fig. 4 and 6, the damping assembly includes a shifting block 561 fixedly connected to the adjusting plate 52, the limiting plate 55 abuts against the shifting block 561 along the axial side wall of the tube body 2, and the abutting parts are respectively provided with a protrusion 562 and a groove 563 which are adapted to each other, the grooves 563 are provided with a plurality of grooves and are sequentially distributed along the axial direction of the tube body 2, and the grooves 563 are set as tooth grooves.

In other embodiments, a plurality of positioning grooves with larger opening area can be selected among the plurality of grooves 563, so that the stop feeling of the protrusions 562 at the positioning grooves is realized, and the touch scale is formed, so that an operator can feel the touch scale when the suction force of the aspirator tube is adjusted by pulling the pulling block 561, and the blind operation performance of the aspirator tube is improved.

Alternatively, in other embodiments, the spacing between the limiting plate 55 and the outer wall of the console 23 may be set to be uneven, for example, the spacing gradually increases along the direction from the head tube 21 to the tail tube 22, so that when the operator dials the dial block 561 to approach the direction approaching the head tube 21, the actual opening area of the adjusting hole 51 is opened to the maximum, and at this time, the suction force of the aspirator tube is the maximum, that is, the greater the suction force to be adjusted, the greater the resistance applied by the operator during adjustment, and the tactile feedback of the suction force adjustment of the aspirator tube can be formed.

In order to achieve the damping effect of the damping assembly, however, it is desirable that the protrusions 562 are sufficiently held against the side walls of the limiting plate 55. Thus, in one embodiment, referring to fig. 4, the limiting piece 55 is provided with a limiting groove 551 aligned with the adjusting hole 51 along the length direction thereof, and the limiting groove 551 penetrates the free end of the limiting piece 55, and the limiting groove 551 is slidably matched with the protrusion 562; the limiting plate 55 is provided with the plurality of grooves 563 on one side or two side walls of the limiting groove 551, and the protrusion 562 is fixedly connected to one side of the shifting block 561, which is close to the grooves 563.

In this embodiment, in order to facilitate the installation of the adjusting plate 52 and the blocking plate 54, so as to prevent the limiting plate 55 from interfering with the normal installation of the blocking plate 54, referring to fig. 4, the limiting plate 55 is detachably connected to the tail pipe 22, specifically, one end of the limiting plate 55 is fixedly connected with a mounting ring 552 sleeved on the end portion of the tail pipe 22 close to the head pipe 21, and the mounting ring 552 is connected with the head pipe 21 and the tail pipe 22 to realize the fixed installation on the tail pipe 22, thereby realizing the convenient and stable installation of the limiting plate 55, simplifying the processing and assembly process of the aspirator pipe of the application, and simultaneously reducing the production cost.

In another embodiment, referring to fig. 6, the limiting plate 55 is integrally formed on the outer wall of the console 23, and one side edge of the limiting plate 55 in the length direction is flush with the wall of one side of the adjusting hole 51, so that after the adjusting plate 52 is mounted on the tail pipe 22, the protrusion 562 directly abuts against the side wall of the limiting plate 55, and no interference is caused to the mounting of the blocking plate 54.

The embodiment of the application relates to an aspirator tube for spinal surgery, which comprises the following implementation principles: when spine surgery is performed, namely, spine bone grafting fusion operation of lumbar discectomy and intervertebral fusion operation is performed in sequence, the application can not only play roles of sucking residues and bleeding after operation, but also play roles of nerve drag hook and bone grain compaction, so that surgical instruments do not need to be replaced for multiple times according to different surgical scenes, the possibility of infection of patients is greatly reduced, and the operation efficiency is greatly improved. And by arranging the long holes of the first suction holes 41, the phenomenon of blockage of the suction pipe can be avoided greatly, and a larger guarantee is provided for spinal surgery.

When the suction force of the suction pipe needs to be regulated, the adjusting piece 52 can slide on the outer wall of the tail pipe 22 by stirring the stirring block 561 so as to change the actual opening area of the adjusting hole 51, thereby regulating the suction force in the suction hole; in this process, the diameter-reducing portion 53 provided on the inner wall of the end tube 22 can increase the speed of the portion of the end tube 22 where the adjusting hole 51 is formed by the residue after the air-flow clamping operation, so as to effectively alleviate the leakage of the residue from the adjusting hole 51 caused by the sudden drop of suction in the end tube 22. Or through extending to the separation blade 54 in the last pipe 22 inner chamber, can protect the actual opening position of adjusting hole 51, also can effectively avoid postoperative residue to be when traversing the region of body 2 and being equipped with adjusting hole 51 from the probability that adjusting hole 51 flows. Therefore, by arranging the anti-leakage structure, the reliability and the safety of the aspirator tube can be obviously improved when the aspirator tube is used.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. The utility model provides an aspirator pipe for spinal surgery, includes head end (1), body (2) and the end (3) that are used for being connected with the aspirator that communicate in proper order, offer a plurality of suction holes rather than the inner chamber intercommunication on head end (1), be provided with suction control structure on body (2), its characterized in that: the head end (1) comprises a straight-through part (11) and a bending part (12) which are integrally formed, the free end of the bending part (12) is closed, an included angle is formed between the straight-through part (11) and the bending part (12), the bending part (12) is flat, and a flat area (13) is arranged on one side of the bending part, which is away from the straight-through part (11);

The suction holes comprise a first suction hole (41) formed in the free end of the bending part (12) and a second suction hole (42) formed in the peripheral wall of the straight-through part (11), the second suction hole (42) is also formed in the side wall, adjacent to the straight-through part (11), of the bending part (12), the first suction hole (41) is a long hole, the aperture of the first suction hole in the flat thickness direction of the bending part (12) is 1-1.8 mm, and the aperture of the second suction hole (42) is 1-1.8 mm;

The suction control structure comprises an adjusting hole (51) penetrating through the peripheral wall of the pipe body (2) and an adjusting sheet (52) axially sliding along the pipe body (2), the area of the adjusting sheet (52) attached to one side of the pipe body (2) is larger than the opening area of the adjusting hole (51), and the adjusting hole (51) is a long hole and the length direction of the adjusting hole is axially arranged along the pipe body (2);

The pipe body (2) is provided with a limiting mechanism for limiting the adjusting piece (52) to be attached to the peripheral wall of the pipe body (2) in a sliding manner;

A diameter-reducing part (53) is arranged in the inner cavity of the pipe body (2), and the diameter-reducing part (53) is arranged at one side of the adjusting hole (51) close to the tail end (3);

A baffle (54) penetrating through the adjusting hole (51) and extending into the inner cavity of the pipe body (2) is fixedly connected to one side, close to the pipe body (2), of the adjusting piece (52);

the baffle plates (54) are arranged in an extending mode along the air flow suction direction in the pipe body (2), and gaps are reserved between the baffle plates (54) and the adjacent inner cavity walls of the pipe body (2);

the width of the baffle plate (54) along the width direction of the adjusting hole (51) is larger than the width of the adjusting hole (51), and the part of the baffle plate (54) exceeding the area of the adjusting hole (51) along the width direction of the adjusting hole (51) is made of soft materials;

The baffle plate (54) is in a curved arc shape along the axial direction of the pipe body (2), and the outer arc part of the baffle plate is close to the axial line of the pipe body (2).

2. An aspirator tube for spinal surgery according to claim 1, wherein: the included angle between the straight-through part (11) and the bending part (12) is 85-120 degrees.

3. An aspirator tube for spinal surgery according to claim 1, wherein: the pipe body (2) comprises a head pipe (21) and a tail pipe (22), and the suction control structure is arranged on the tail pipe (22);

the head pipe (21) is made of medical stainless steel or titanium alloy, and the tail pipe (22) is made of medical engineering plastic.

4. An aspirator tube for spinal surgery according to claim 1, wherein: the limiting mechanism comprises limiting pieces (55) which are arranged on the peripheral wall of the pipe body (2) at intervals, and damping components used for improving the sliding resistance of the adjusting piece (52) are arranged on the limiting pieces (55).

5. An aspirator tube for spinal surgery according to claim 4, wherein: the damping assembly comprises a shifting block (561) fixedly connected to the adjusting piece (52), the limiting piece (55) is arranged along the axial side wall of the pipe body (2) and is abutted to the shifting block (561), the two abutted parts are respectively provided with a protrusion (562) and a groove (563) which are matched with each other, and the grooves (563) are provided with a plurality of grooves and are arranged along the axial direction of the pipe body (2) in sequence.

6. A spinal surgical aspirator tube according to any one of claims 1-3, wherein: the length dimension of the bending part (12) is 6-10 mm, and the thickness dimension of the bending part (12) in the flat direction is 3.5-5 mm.