CN111281446A

CN111281446A - Abrasive drilling with protective sheath

Info

Publication number: CN111281446A
Application number: CN202010155768.1A
Authority: CN
Inventors: 相宏飞; 沈娜娜; 陈勇; 郑丽娜; 徐浩; 吴晓淋; 马学晓; 陈伯华
Original assignee: 相宏飞
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2020-06-16

Abstract

The embodiment of the application provides a grinding drill with a protective sheath tube, and the grinding drill comprises a grinding drill body and the protective sheath tube; the abrasive drilling body comprises a connecting rod, one end of the connecting rod is provided with a drill bit, and the other end of the connecting rod is connected with a power device, so that the abrasive drilling body is driven to rotate by the power device; the protective sheath is sleeved outside the connecting rod, and a defect region is arranged at one end of the protective sheath matched with the drill bit, so that one side of the drill bit is covered by the protective sheath, and the other side of the drill bit is exposed outside the protective sheath; the protective sheath tube is also provided with a flexible elastic sheet which can stretch out, and when the flexible elastic sheet stretches out of the protective sheath tube, the part of the flexible elastic sheet stretching out is used for covering the end part of the drill bit. The abrasive drilling provided by the embodiment of the application can protect partial areas of the abrasive drilling, is convenient to operate and is particularly suitable for a single-side double-channel system.

Description

Abrasive drilling with protective sheath

Technical Field

The application relates to the technical field of medical instruments, in particular to a grinding drill with a protective sheath tube.

Background

The diseases such as cervical spondylosis, lumbar intervertebral disc protrusion, lumbar spinal stenosis, lumbar spondylolisthesis, degenerative scoliosis and the like which are secondary to spinal degeneration are collectively called as 'spinal degenerative diseases', and relate to wide crowds and high disability rate.

Surgery is the fundamental method of treating such conditions, and there are two techniques commonly used in surgery today. One is the traditional open surgery, but the traditional open surgery has large wound, slow recovery and high cost, can cause iatrogenic labor capacity obstacle, has the limitation which is difficult to overcome, and has lower acceptance and satisfaction of patients. The other is a minimally invasive intervertebral foramen mirror technology which is generally favored by patients with the advantages of small trauma, ideal curative effect, rapid rehabilitation, relatively low cost and the like. However, the intervertebral foramen mirror technology is a single channel, the range of the surgical field is affected, the use of surgical instruments is limited, and a plurality of traditional surgical instruments cannot be used in the single channel.

In order to solve the problems of the single-channel transforaminal endoscope technology, a single-side double-channel endoscope technology exists at present, wherein one channel is an endoscope channel, and the other channel is an operation channel. The technique has a special channel for surgical instruments, and can use the surgical instruments used in the traditional operation, thereby combining the technical advantages of the traditional open operation and the intervertebral foramen endoscope into a whole, and reducing the operation limitation and visual blind spots to the maximum extent for treating degenerative diseases, particularly spinal stenosis and the like.

Although the single-side double-channel inner diameter technology greatly widens the application range of surgical instruments, a certain disadvantage still exists when part of the traditional surgical instruments are applied to the single-side double-channel technology.

Disclosure of Invention

In a first aspect, an embodiment of the present application provides a grinding drill with a protective sheath, where the grinding drill includes a grinding drill body and a protective sheath;

the abrasive drilling body comprises a connecting rod, one end of the connecting rod is provided with a drill bit, and the other end of the connecting rod is connected with a power device, so that the abrasive drilling body is driven to rotate by the power device;

the protective sheath is sleeved outside the connecting rod, and a defect region is arranged at one end of the protective sheath matched with the drill bit, so that one side of the drill bit is covered by the protective sheath, and the other side of the drill bit is exposed outside the protective sheath;

still be equipped with the flexible shell fragment of telescopic on the protection sheath pipe, flexible shell fragment is followed the extending direction setting of protection sheath pipe, works as flexible shell fragment is in when stretching out on the protection sheath pipe, the part that flexible shell fragment stretches out is used for covering the tip of drill bit.

Preferably, the end of the abrasive drilling body and/or the protective sheath is provided with a negative pressure interface for connecting a negative pressure device, and the negative pressure device can suck out the liquid at the abrasive drilling position through the negative pressure interface.

Preferably, the negative pressure port is disposed at an end of the protective sheath, and a gap between the protective sheath and the connecting rod forms a liquid flow channel.

Preferably, the negative pressure interface is arranged at the tail end of the abrasive drilling body, and specifically comprises: the connecting rod is hollow rod, the tail end of the hollow rod forms a negative pressure interface, the drill bit is provided with a through hole communicated with the hollow rod, and a liquid flow channel is formed between the through hole and the gap of the hollow rod.

Preferably, the through hole is provided at an end and/or a side of the abrasive drill.

Preferably, one end of the protective sheath matched with the drill bit is an inclined port, and the inclined port covers a partial region of the drill bit and exposes the partial region of the drill bit.

Preferably, the drill is a nerve drill configured to grind the side of the drill more than the front of the drill.

Preferably, the nerve drill is configured such that there is no abrasive action to the front of the drill bit.

Preferably, the drill bit is a watermelon drill or a grinding head, and the grinding effect of the watermelon drill or the grinding head on the side and the front of the drill bit is the same.

The abrasive drilling provided by the embodiment of the application can protect partial areas of the abrasive drilling, is convenient to operate and is particularly suitable for a single-side double-channel system.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of a single-side dual channel system according to an embodiment of the present disclosure;

fig. 2 is a schematic structural view of a grinding drill with a protective sheath according to an embodiment of the present disclosure;

fig. 3 is a schematic view of another structure of a grinding drill with a protective sheath according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a bushing with a spacer according to an embodiment of the present disclosure;

fig. 5 is a schematic view of another structure of a grinding drill with a protective sheath according to an embodiment of the present disclosure;

fig. 6 is a schematic view of another structure of a grinding drill with a protective sheath according to an embodiment of the present disclosure;

FIG. 7 is an enlarged view of a portion of the embodiment of the present application in phantom in FIG. 6;

the symbols in the figures are represented as: 100-single-side two-channel system, 101-observation channel, 102-operation channel, 200-abrasive drill, 210-abrasive drill body, 211-drill bit, 212-connecting rod, 213-negative pressure interface, 214-through hole, 220-protective sheath tube, 221-flexible elastic sheet, 222-negative pressure interface, 300-sleeve, 310-isolation plate.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Fig. 1 is a schematic diagram of a single-side dual channel system according to an embodiment of the present invention, as shown in fig. 1, a single-side dual channel system 100 includes two channels, one is an observation channel 101 and one is a surgical operation channel 102. During operation, observation is performed through the observation channel 101, and related operation is performed through the operation channel 102.

The abrasive drill is a common instrument used in orthopedic surgery, and usually, the drill bit 201 of the abrasive drill is completely exposed to the outside, so that the operator is required to perform very precise control. However, in the single-sided dual channel technique, since there are two channels, the operator needs to control the scope in the observation channel 101 with one hand and the surgical instrument with the other hand for the relevant operation. That is, in the single-sided dual channel system 100, the operator can only operate the surgical instrument with one hand, which presents a challenge to drill control.

In view of the above problem, the embodiment of the present application provides a grinding drill 200 with a protection sheath, where the grinding drill 200 includes a grinding drill body 210 and a protection sheath 220 that are matched with each other, and the protection sheath 220 may protect a partial region of a drill bit 211 of the grinding drill 200, so as to facilitate an operator to perform the grinding drill operation with a single hand, and is particularly suitable for the single-side dual-channel system.

Fig. 2 is a schematic structural view of a milling drill with a protective sheath according to an embodiment of the present application, and fig. 3 is a schematic structural view of another milling drill with a protective sheath according to an embodiment of the present application, as shown in fig. 2 in combination with fig. 3, the milling drill body 210 includes a connecting rod 212, one end of the connecting rod 212 is provided with a drill bit 211, the other end of the connecting rod 212 is used for connecting a power device, and then the power device drives the milling drill body 210 to rotate, i.e., drives the drill bit 211 to rotate, so as to perform a milling operation. Protective sheath 220 is used for the cover to establish the connecting rod 212 outside, protective sheath 220 with drill bit 211 assorted one end is equipped with the defect region, makes one side of drill bit 211 by protective sheath 220 cladding, the opposite side of drill bit 211 is exposed protective sheath 220 is outside.

The end of protective sheath 220 that mates with bur 211 is normally circular in cross-section, and in the present embodiment, is configured as an angled port that may be used to cover a portion of bur 211, exposing a portion of bur 211.

In the orientation shown in fig. 2 and 3, a defect area exists above protective sheath 220, and the lower portion of protective sheath 220 encloses drill bit 211. In the operation process, the operator directs one side of the protective sheath 220, which has a defect area, to an area to be polished, and the opposite side of the area to be polished can be well protected. Wherein, protection sheath 220 can grind the flexible rotation of brill body 210 relatively, in the operation process, adjustment protection sheath 220 that operating personnel can be nimble with the relative position of drill bit 211, the position of polishing of adjusting drill bit 211 promptly, convenient operation. It is understood that adjusting the relative position of protective sheath 220 to drill bit 211 is performed by an operator, and protective sheath 220 does not rotate with drill bit 211 when drill bit 211 is rotated. Generally speaking, the grinding drill 200 provided by the embodiment of the application can protect one side of the grinding drill 200, is convenient to operate, and is particularly suitable for a single-side double-channel system.

In actual operation, a minimally invasive small incision surgery such as a unilateral double channel surgery has a certain risk in front of the drill 211 because the front area of the drill 211 cannot be seen by the eyes of an operator. In order to solve the problem, the embodiment of the application provides three solutions.

The first scheme is as follows:

in the embodiment of the present application, the drill 211 is a nerve drill, and the grinding effect of the nerve drill on the side of the drill 211 is greater than the grinding effect on the front of the drill 211, or the nerve drill only has the grinding effect on the side of the drill 211 and does not have the grinding effect on the front of the drill 211. In this application embodiment, protect the place ahead region of drill bit 211 through the nerve drill, protect the side of drill bit 211 through protection sheath 220 for can cut the position that needs the cutting accurately in the operation process, improve the security and the easy operability of operation greatly.

Scheme II:

the last flexible shell fragment 221 of telescopic that still is equipped with of protection sheath pipe 220 that the embodiment of this application provided, flexible shell fragment 221 is followed the extending direction setting of protection sheath pipe 220 works as flexible shell fragment 221 is in when stretching out on the protection sheath pipe 220, the part that flexible shell fragment 221 stretched out is used for covering the tip of drill bit 211. As shown in fig. 2 and fig. 3, fig. 2 is a schematic view of the flexible elastic sheet 221 being contracted inside the protective sheath 220, and fig. 3 is a schematic view of the flexible elastic sheet 221 being extended outside the protective sheath 220, in the embodiment of the present invention, an end portion of the flexible elastic sheet 221 has a certain shape, so that the flexible elastic sheet 221 is curved after being extended outside the protective sheath 220 to cover a front end region of the drill 211.

It should be noted that, since the embodiment of the present application can protect the front of the drill bit 211 through the flexible elastic sheet 221, the drill bit 211 may use the neural drill in the first embodiment, and may also use a watermelon drill or a sanding head, and the grinding effect of the watermelon drill or the sanding head on the side and the front of the drill bit 211 is the same.

The third scheme is as follows:

fig. 4 is a schematic structural view of a cannula 300 with a spacer 310 according to an embodiment of the present application, where the cannula 300 is used with the burr 200 shown in fig. 2 and 3, and the cannula 300 is used to separate human tissue as an insertion channel of the burr 200. In other words, during surgery, cannula 300 is first inserted at the relevant location, and then burr 200 is inserted into cannula 300 to perform the relevant milling operation. A spacer 310 is provided at the front end of the cannula 300, the spacer 310 serving to protect tissue (e.g., nerves) at the front end of the cannula 300. That is, in the embodiment of the present application, if it is required to grind an area in front of the drill 211 (e.g., a hyperplastic bone), the drill 211 having a grinding function on the front, such as a watermelon drill or a grinding head, may be used. At this time, the tissue ahead of the drill 211 may be protected by the partition plate 310. For example, by inserting the spacer 310 between the nerve and the bone such that the nerve is positioned under the spacer 310, a safe grinding operation may be performed by a watermelon drill or a sanding head.

It should be noted that, in this embodiment, the protective sheath 220 with the flexible elastic sheet 221 may be adopted, and the protective sheath 220 without the flexible elastic sheet 221 may also be adopted, and those skilled in the art may flexibly configure the protective sheath according to actual needs, which all fall within the protection scope of the present application.

Usually, the surgical site needs to be re-operated with saline during the surgical procedure to ensure the surgical field. However, as the drill 211 is ground, the swarf is gradually released into the irrigating fluid, which may affect the surgical procedure. In the embodiment of the present application, a negative pressure port 213/222 for connecting a negative pressure device is disposed at the end of the abrasive drilling body 210 and/or the protective sheath 220, and the negative pressure device can suck out the liquid at the position of the abrasive drilling 200 through the negative pressure port 213/222, that is, the abrasive dust falling off in the flushing liquid is sucked out.

Fig. 5 is a schematic view of another structure of a drill with a protection sheath according to an embodiment of the present disclosure, as shown in fig. 5, the negative pressure port 222 is disposed at an end of the protection sheath 220, and a gap between the protection sheath 220 and the connecting rod 212 forms a fluid flow channel. Under the negative pressure of the negative pressure device, the flushing liquid at the drill bit 211 flows out through the negative pressure port 222 after passing through the gap between the protective sheath 220 and the connecting rod 212, as shown by the arrow direction in fig. 5.

Fig. 6 is a schematic structural view of another abrasive drilling tool with a protective sheath according to an embodiment of the present application, and fig. 7 is a partial enlarged view of a dotted line in fig. 6 according to an embodiment of the present application, as shown in fig. 6 in combination with fig. 7, the negative pressure port 213 is disposed at a distal end of the abrasive drilling tool body 210, specifically: the connecting rod 212 is a hollow rod, a negative pressure interface 213 is formed at the tail end of the hollow rod, a through hole 214 communicated with the hollow rod is formed in the drill bit 211, and a liquid flow channel is formed between the through hole 214 and the hollow rod. Under the action of the negative pressure device, the flushing liquid at the drill bit 211 flows into the hollow rod through the through hole 214 and further flows out through the negative pressure port 213, as shown by the arrow direction in fig. 6.

It should be noted that the present embodiment does not limit the position and number of the through holes 214 on the drill 211, for example, the through holes 214 may be disposed at the end and/or the side of the abrasive drill 200.

It will be appreciated that in the embodiment shown in fig. 6, the connecting rod 212 is provided as a hollow rod, and the through hole 214 is provided in the drill 211, which will affect the strength of the connecting rod 212 and the drill 211, but since the through hole 214 is provided in the drill 211, the accumulation of grinding in the grooves of the drill 211 can be avoided. Therefore, a person skilled in the art can select the scheme in fig. 5 or fig. 6 according to actual needs, for example, in an application scenario with a high requirement on intensity, the scheme in fig. 5 is selected, and in an application scenario with a low requirement on intensity, the scheme in fig. 6 is selected.

In addition, in the solutions shown in fig. 5 and fig. 6, the technical feature that the grinding drill 200 is connected to a negative pressure device is mainly described, the protective sheath 220 may be provided with the flexible elastic sheet 221, or may not be provided with the flexible elastic sheet 221, and a person skilled in the art may select a configuration according to actual needs, which all should fall within the protection scope of the present application.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The same and similar parts in the various embodiments in this specification may be referred to each other. Especially, for the terminal embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant points can be referred to the description in the method embodiment.

The above-described embodiments of the present application do not limit the scope of the present application.

Claims

1. The abrasive drill with the protective sheath is characterized by comprising an abrasive drill body and a protective sheath;

2. The abrasive drill according to claim 1, wherein the end of the abrasive drill body and/or the protective sheath is provided with a negative pressure port for connecting a negative pressure means, and the negative pressure means can suck out the liquid at the abrasive drill position through the negative pressure port.

3. The abrasive drill of claim 2, wherein the negative pressure port is disposed at a distal end of the protective sheath, and a space between the protective sheath and the connecting rod forms a fluid flow channel.

4. The abrasive drill according to claim 2, wherein the negative pressure port is provided at the end of the abrasive drill body, specifically: the connecting rod is hollow rod, the tail end of the hollow rod forms a negative pressure interface, the drill bit is provided with a through hole communicated with the hollow rod, and a liquid flow channel is formed between the through hole and the gap of the hollow rod.

5. The abrasive drill according to claim 4, wherein the through hole is provided at an end and/or a side of the abrasive drill.

6. The abrasive drill of claim 1, wherein the end of the protective sheath that mates with the drill bit is a beveled port that covers a portion of the drill bit, exposing a portion of the drill bit.

7. The abrasive drill according to claim 1, wherein the drill bit is a nerve drill configured to abrade a side of the drill bit more than a front of the drill bit.

8. The abrasive drill of claim 7, wherein the nerve drill is configured to be free of abrasive action to the front of the drill bit.

9. The abrasive drill according to claim 1, wherein the drill bit is a watermelon drill or a sanding head, and the grinding action of the watermelon drill or the sanding head on the side and the front of the drill bit is the same.