CN217472557U - Interspinous expansion balloon - Google Patents

Abstract

The utility model discloses an interspinous swelling balloon, which belongs to the technical field of medical instruments and comprises a shrinkable and expandable inner protective layer and an outer protective layer, wherein one side of the inner protective layer and one side of the outer protective layer are provided with a through channel, the inner protective layer and the outer protective layer are fixedly connected through the through channel, the inner protective layer is arranged inside the outer protective layer, an anti-seepage cavity for filling anti-seepage contents is arranged between the inner protective layer and the outer protective layer, and a perfusion structure is fixedly connected with the through channel; the pouring structure comprises a pouring opening and a check valve, the pouring opening is fixedly connected with the check valve, the check valve is provided with a cross beam with a sliding barrel, the check valve comprises an entering section and a shunting section, the check valve further comprises a valve clack provided with a sliding rod and a spring, one end of the valve clack close to the pouring opening is a near end of the valve clack, one end of the valve clack close to the inside of a balloon is a far end of the valve clack, the sliding rod is slidably connected with the sliding barrel, the far end of the spring is fixedly connected with the check valve, and the spring props up the valve clack to enable the valve clack to plug an inlet of the check valve.

Description

Interspinous expansion balloon

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to interspinous process inflation sacculus.

Background

The interspinous process fixing apparatus is widely applied to treatment of diseases such as intervertebral disc protrusion, articular process syndrome, degenerative spinal stenosis and the like, and achieves multiple purposes of reducing articular process pressure and intervertebral disc stress, opening intervertebral foramen and tensioning posterior longitudinal ligament and ligamentum flavum to relieve compression of nervous tissues and fixing a posterior column to improve spinal stability and the like by providing a long-term existing supporting force between the spinous processes.

At present, a large wound is often caused when the interspinous process fixator is implanted in clinic, the paraspinous muscle group needs to be stripped in the operation, and the anesthesia mode is general anesthesia or lumbar anesthesia, so that the recovery time is long, and a plurality of adverse effects are caused to the early recovery of normal life of a patient; in addition, most of the existing interspinous fixtures are made of titanium alloy or high molecular compounds, the rigidity and the strength of the interspinous fixtures are higher than those of normal physiological structures, and the mobility of an operation section is greatly reduced after the interspinous fixtures are fixed between the interspinous fixtures. Therefore, in the actual clinical work, an interspinous process fixing instrument which can be implanted into the body through a minimally invasive technique and can achieve the effect of spreading the spinous processes and meet the dynamic and stable curative effect needs to be designed, in particular to an interspinous process expansion balloon.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problem that proposes among the background art, the utility model discloses a following technical scheme:

the interspinous swelling balloon comprises a balloon body and a filling structure, and is characterized in that the balloon body comprises an inner protective layer and an outer protective layer which are capable of contracting and swelling, a through channel is arranged on one side of the inner protective layer and one side of the outer protective layer, the inner protective layer and the outer protective layer are fixedly connected through the through channel, the inner protective layer is arranged inside the outer protective layer, an anti-leakage cavity used for filling anti-leakage contents is arranged between the inner protective layer and the outer protective layer, and the filling structure is fixedly connected with the through channel.

Further, the structure of filling includes pouring into mouth and check valve, pours into mouth and check valve fixed connection, and the check valve is equipped with the crossbeam of taking the smooth section of thick bamboo, and the check valve is including getting into section and reposition of redundant personnel section.

Furthermore, the check valve also comprises a valve clack provided with a slide rod and a spring, wherein one end of the valve clack close to the filling opening is a near end of the valve clack, one end of the valve clack close to the inside of the balloon is a far end of the valve clack, the slide rod is in sliding connection with the slide cylinder, the far end of the spring is fixedly connected with the check valve, and the valve clack is supported by the spring to block an inlet of the check valve.

Furthermore, the outer protective layer and the inner protective layer further comprise expansion areas on two sides and a framework area in the middle, and before the expansion balloon is implanted, the expansion areas are stored in the framework areas in a contraction state to reduce the volume of the balloon during implantation, so that the wound area is reduced.

Furthermore, the framework area is provided with an elastic framework, and the elastic framework is fixedly connected with the framework area.

Furthermore, after the inflatable saccule is implanted into the body of a patient, the inflatable area is inflated and deformed under the action of perfusion and clamped between the two adjacent spinous processes to provide fixed support for the inflatable saccule.

Furthermore, the anti-leakage cavity comprises a plurality of sub-cavities which are not communicated with each other, when a certain part of the outer protective layer is damaged, only the inside of the sub-cavity corresponding to the damaged part leaks, and the whole expansion balloon can still be used continuously.

Furthermore, a plurality of filling cavities are arranged in the inner protective layer, different filling cavities are communicated with one another, and the compression resistance of the inflatable balloon is improved.

Further, the valve flap has a distal end with a larger cross-sectional area than a proximal end thereof, such that the valve flap blocks the inlet section of the check valve from the distal end to the proximal end.

Further, the filling opening is made of medical rubber, so the filling opening is usually in a contracted state to prevent the filling material remained on the inlet section from overflowing.

The utility model has the advantages that:

the volume of the expansion balloon can be effectively reduced by arranging the expansion area and the framework area, so that the minimally invasive property of the implantation operation is realized; the elastic framework is arranged on the basis of effectively expanding the adjacent spinous processes to protect the original intervertebral flexibility; the leakage prevention cavity and the check valve are arranged, so that the expansion balloon can be effectively prevented from leaking in the process of perfusion and use.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention before expansion;

FIG. 2 is a schematic view of the expanded structure of the present invention;

FIG. 3 is a schematic overall sectional view of the present invention;

fig. 4 is a sectional structure front view of the present invention;

FIG. 5 is a schematic view of the pouring structure of the present invention;

FIG. 6 is a schematic view of the check valve of the present invention;

fig. 7 is a schematic sectional view of the check valve of the present invention;

FIG. 8 is a schematic view of a half-section structure of the check valve opened during the filling of the contents of the present invention;

FIG. 9 is a schematic view of a half-section structure of the check valve closed after the contents of the present invention are filled;

in the figure, 1, balloon; 11. an outer protective layer; 111. a first expansion end; 112. a first framework region; 12. an inner protective layer; 121. a second expansion end; 122. a second framework region; 13. a leakage-proof cavity; 2. a perfusion structure; 21. a check valve; 211. a cross beam; 212. a slide cylinder; 213. entering a section; 214. a flow splitting section; 22. a valve flap; 221. a spring; 222. a slide bar; 23. an infusion port.

Detailed Description

The technical solutions in the embodiments of the present invention will be described in detail below with reference to specific embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the disclosure in the specification. The utility model discloses still implement or use through other different concrete implementation manners, under the condition of conflict-free, the characteristic intercombination in following embodiment and the embodiment, based on the embodiment in the utility model, all other embodiments that the ordinary skilled person in the art obtained under the prerequisite of not making creative work all belong to the scope of protection of the utility model.

In an interspinous process inflation balloon diagram; 1, included in the balloon diagram; 1 and a perfusion structure 2, characterized in that in a balloon diagram; the anti-leakage filling structure comprises a shrinkable and expandable inner protective layer 12 and an outer protective layer 11, a through passage is arranged between the inner protective layer 12 and the outer protective layer 11, the inner protective layer 12 and the outer protective layer 11 are fixedly connected through the through passage, the inner protective layer 12 is arranged inside the outer protective layer 11, an anti-leakage cavity 13 for filling anti-leakage contents is arranged between the inner protective layer 12 and the outer protective layer 11, and a filling structure 2 is fixedly connected with the through passage.

In a more preferred embodiment, the pouring structure 2 includes a pouring port 23 and a check valve 21, the pouring port 23 is fixedly connected with the check valve 21, and the check valve 21 is provided with a cross beam 211 with a slide cylinder 212, as shown in fig. 5 and 6. The check valve 21 includes an inlet section 213 and a flow dividing section 214, the check valve 21 further includes a valve flap 22 having a sliding rod 222 and a spring 221, the sliding rod 222 is slidably connected to the sliding cylinder 212, a distal end of the spring 221 is fixedly connected to the check valve 21, and the spring 221 supports the valve flap 22 to block an inlet of the check valve 21, as shown in fig. 7-9.

In a more preferred embodiment, the outer protective layer 11 and the inner protective layer 12 further comprise expansion areas at two sides and a skeleton area at the middle part, the through channel is arranged in the expansion areas, the expansion areas particularly comprise a first expansion end 111 arranged at the outer part and a second expansion end 121 arranged at the inner part, the skeleton areas particularly comprise a first skeleton area 112 arranged at the outer part and a second skeleton area 122 arranged at the inner part, and in the interspinous process balloon diagram, the through channel is arranged at the expansion areas; 1 before being implanted into a human body, the expansion area is accommodated in the framework area in a contraction state so as to reduce the volume when being implanted, thereby reducing the wound area; the framework region may have a cylindrical, rectangular or dumbbell-shaped structure, preferably a cylindrical structure; the framework region is also provided with an elastic framework which is fixedly connected with the framework region and made of PC (polycarbonate) for protecting the flexibility of the movement of the adjacent spinous processes; refer to fig. 4.

More preferred embodiments are, in the balloon-inflated diagram; 1 after being implanted into the body of a patient, the expansion area expands and deforms under the action of perfusion and is clamped between two adjacent spinous processes, and the expansion area is in an expansion balloon diagram; 1 provide a fixed support, see fig. 1, 2, 3, 4.

In a more preferred embodiment, anti-leakage filler is preset in the anti-leakage cavity 13, and the anti-leakage filler is liquid anti-leakage filler which can be absorbed by a human body; the anti-leakage cavity 13 comprises a plurality of sub-cavities which are not communicated with each other, when a certain part of the outer protective layer 11 is damaged, only the inner part of the sub-cavity corresponding to the damaged part leaks, and the balloon is inflated; 1 the whole body can still be used continuously; a plurality of filling cavities are arranged inside the inner protective layer 12, and different filling cavities are communicated with each other, so that the expansion balloon diagram is improved; 1, refer to fig. 3 and 4.

More preferably, the material of the inner protective layer 12 includes, but is not limited to, polyurethane or silicone rubber or polyetheretherketone, and the material of the outer protective layer 11 includes, but is not limited to, polyurethane or silicone rubber or polyetheretherketone. These materials can be implanted into the body and have a certain elasticity, which facilitates the reduction of recovery time, see fig. 4.

In a more preferred embodiment, the check valve 21 comprises a plurality of flow dividing sections 214, and each flow dividing section 214 comprises a liquid outlet corresponding to the filling chamber, so as to facilitate shortening of the balloon inflation diagram; 1, with reference to fig. 7, 8 and 9, the cross-sectional area of the distal end of the flap 22 is greater than the cross-sectional area of the proximal end thereof so that the flap 22 blocks the inlet section 213 of the check valve 21 from the distal end to the proximal end, with reference to fig. 4, 7, 8 and 9.

More preferably, the infusion port 23 is made of medical rubber, so that the infusion port 23 is normally in a contracted state to prevent the infusion remaining in the inlet section 213 from overflowing, and referring to fig. 5, in order to realize the present inflatable balloon diagram; 1 is compatible with human tissues, a biological coating or at least one layer of biocompatible material can be added outside the outer protective layer 11, and the material for manufacturing the biological coating or the outer layer of the biological coating can be polyethylene terephthalate (terylene resin), or polyester, or polypropylene, or expanded polytetrafluoroethylene.

The utility model discloses a use method does: firstly, a balloon diagram in an uninflated state is displayed; 1, sending the mixture into a space between two adjacent spinous processes to be propped open through a device used in perfusion, slightly adjusting the placement position and then showing the diagram of a sacculus; 1, filling the inside, wherein after the filling is finished, the expansion area expands and is clamped on two sides of the spinous process, and the framework area is used for bearing the extrusion of the adjacent spinous processes and preventing the contact of the adjacent spinous processes on the basis of ensuring certain flexibility of the adjacent spinous processes. In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described are combined in any suitable manner in any one or more embodiments or examples.

The embodiments described herein are only some embodiments, not all embodiments, and other advantages and effects of the present invention can be easily understood by those skilled in the art from the disclosure of the present specification. The utility model discloses still implement or use through other different concrete implementation modes, under the circumstances of conflict-free, the characteristic intercombination in following embodiment and the embodiment, based on the embodiment in the utility model, all other embodiments that ordinary skilled person in the art obtained under the prerequisite of not making creative work all belong to the scope of the utility model.

Claims (10)

1. The interspinous swelling balloon comprises a balloon body and a filling structure, and is characterized in that the balloon body comprises an inner protective layer and an outer protective layer which can shrink and swell, a through passage is formed in one side of the inner protective layer and one side of the outer protective layer, the inner protective layer and the outer protective layer are fixedly connected through the through passage, the inner protective layer is arranged inside the outer protective layer, an anti-leakage cavity is formed between the inner protective layer and the outer protective layer, and the filling structure is fixedly connected with the through passage.

2. The interspinous process inflatable balloon according to claim 1, wherein the perfusion structure includes a perfusion port and a check valve, the perfusion port is fixedly connected with the check valve, the check valve is provided with a cross beam with a sliding barrel, and the check valve includes an inlet section and a flow dividing section.

3. The interspinous process inflation balloon of claim 2, wherein the check valve further comprises a flap having a slide rod and a spring, the slide rod being slidably connected to the slide barrel, a distal end of the spring being fixedly connected to the check valve, the spring supporting the flap to block an inlet of the check valve.

4. The interspinous process inflation balloon according to claim 1, wherein the outer protective layer and the inner protective layer further comprise lateral inflation regions and a central skeleton region, the inflation regions being received in a deflated state within the skeleton regions prior to implantation of the inflation balloon.

5. An interspinous process inflatable balloon according to claim 4, wherein the frame region is provided with an elastic frame, the elastic frame is fixedly connected with the frame region and is made of PC.

6. The interspinous process inflation balloon according to claim 4, wherein the inflation region is inflated under the infusion to deform and engage with the adjacent spinous processes.

7. The interspinous process inflation balloon according to claim 1, wherein the leakage prevention cavity comprises a plurality of sub-cavities which are not communicated with each other.

8. An interspinous process inflation balloon according to claim 3, wherein the inner protective layer has a plurality of filling chambers formed therein, and different filling chambers are in communication with each other.

9. An interspinous process inflation balloon according to claim 1, wherein the material of the inner protective layer includes, but is not limited to, polyurethane or silicone rubber or polyetheretherketone and the material of the outer protective layer includes, but is not limited to, polyurethane or silicone rubber or polyetheretherketone.

10. An interspinous process inflation balloon according to claim 8, wherein the check valve includes a plurality of diverter segments, each diverter segment including a liquid outlet corresponding to the filling chamber.

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