Intracranial puncture aiming device

Abstract

The invention discloses an intracranial puncture aimer, comprising a semicircular instrument plate body, a side of the semicircular instrument plate body close to an outer arc edge is provided with an arc guide groove, an angle scale line is arranged between the arc guide groove and the outer arc edge, and the 0 scale line of the angle scale line is located at the middle position of the outer arc edge; a positioning slider which can slide along the arc guide groove is arranged on the arc guide groove, and the positioning slider comprises an inner slider arm and an outer slider arm, both of which are rectangular block structures, the two are fixedly connected, and the connection between the two is located in the arc guide groove, and the length of the inner slider arm is less than the length of the outer slider arm.

Description

Technical Field

[0001] The invention relates to a medical instrument for neurosurgery, in particular to an intracranial puncture aiming device. Background Art

[0002] During neurosurgery, it is necessary to draw positioning lines on the patient's head and face when locating the puncture. After drawing the lines, it is entirely based on experience, and there are often deviations in the puncture angle, resulting in poor surgical results.

[0003] On July 18, 2015, the applicant applied for an invention patent entitled, A hematoma puncture locator, with an authorization announcement number of CN204971490U. The invention of the patent discloses a hematoma puncture locator, including an angle positioning device capable of locating the puncture angle, the angle positioning device being connected to a telescopic side arm; the angle positioning device being a semicircular instrument; the baseline of the semicircular instrument being located at the bottom edge of the semicircular instrument

[0004] On; the bottom of the semicircular instrument is hinged with a positioning side arm, and a cavity is provided in the positioning side arm, and the telescopic side arm can slide along the cavity; the bottom of the semicircular instrument is provided with a positioning groove, and the positioning groove is a "U"-shaped groove; the end of the positioning side arm is provided with a positioning thin plate, and the end of the positioning thin plate is arc-shaped, and the positioning thin plate goes deep into the positioning groove; the structure of the present invention is reasonable. When in use, the present invention is placed on the patient's head, and puncture is performed according to the scale on the semicircular instrument or the side arm. The puncture is performed using the present invention, and the puncture accuracy rate is high, which can reach more than 99.8%.

[0005] Although this patent is relatively convenient to use, it has the following problems after long-term clinical use: 1. The scale problem. The scale at the bottom of the semicircular instrument does not start from 0 degrees. It is not convenient to intuitively reflect the puncture angle to the distance in actual use; 2. The two positioning side arms are symmetrically arranged. In actual use, it is found that the two symmetrically arranged positioning side arms are not convenient for clamping the head, and are not suitable for most human heads; 3. A straight line is determined based on two points. When the puncture needle is inserted, the puncture point is easy to locate, but the other end of the puncture needle is difficult to locate, so the needle cannot be inserted according to the expected puncture angle, which brings inconvenience to the operation. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a cranial puncture locator for the deficiencies of the above technical solutions, which can conveniently determine the puncture angle and reduce the puncture angle deviation.

[0007] In order to solve the above technical problems, the technical solution of the present invention is:

[0008] An intracranial puncture sight comprises a semicircular instrument plate body, a side of the semicircular instrument plate body close to an outer arc edge is provided with an arc guide groove, an angle scale line is arranged between the arc guide groove and the outer arc edge, and a 0 scale line of the angle scale line is located at the middle position of the outer arc edge;

[0009] A positioning slider that can slide along the arc guide groove is provided on the arc guide groove, and the positioning slider includes an inner slider arm and an outer slider arm. The inner slider arm and the outer slider arm are both rectangular block structures, and the two are fixedly connected. The connection between the two is located in the arc guide groove, and the length of the inner slider arm is smaller than the length of the outer slider arm.

[0010] The following are further improvements to the above technical solution:

[0011] There are gaps between the inner slider arm, the outer slider arm and the semicircular instrument plate body.

[0012] A positioning block is fixedly arranged on the outer sliding block, and a depression is formed on the positioning block to form a positioning groove. A positioning bolt is threadedly connected to the outer sliding block arm near the edge of the outer sliding block arm, and the end of the positioning bolt can be screwed out of the outer sliding block arm. After the end of the positioning bolt is screwed out, the semicircular instrument plate can be tightened.

[0013] A positioning pin is arranged on one side of the inner slider arm.

[0014] The bottom of the semicircular instrument plate is provided with scales, and the 0 scale of the scales at the bottom of the semicircular instrument plate is located in the middle of the bottom of the semicircular instrument plate.

[0015] The left positioning side arm and the right positioning side arm have the same structure, both of which are arc-shaped strip structures. The end of the left positioning side arm has two clamping arms, and the two clamping arms are respectively located on both sides of the semicircular instrument plate body. A hinge column is arranged between the two clamping arms; the hinge column is fixedly connected to the two clamping arms, and the hinge column passes through the semicircular instrument plate body.

[0016] When in use, the present invention is placed on the patient's head, and the operating angle is calculated according to the distance. When the puncture needle is inserted, one point is positioned on the patient's skull, and the other end is positioned through the positioning groove on the positioning block, which is convenient for puncture and insertion, and the insertion accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 It is a structural schematic diagram of an intracranial puncture aiming device in the present invention;

[0018] Attached Figure 2 is a schematic diagram of the structure of the positioning side arm;

[0019] Attached Figure 3 It is a structural schematic diagram of the angle positioning device.

[0020] In the figure:

[0021] 1-angle scale; 2-arc guide groove; 3-semicircular instrument plate; 4-left positioning side arm; 5-right positioning side arm; 6-positioning slider; 41-clamping arm; 42-hinge column; 61-positioning block; 62-positioning groove; 64-inner slider arm; 65-outer slider arm; 66-positioning pin; 68-positioning bolt.

[0022] The present invention is described in detail below in conjunction with the accompanying drawings. DETAILED DESCRIPTION

[0023] Embodiment, as attached Figure 1 , Attachment Figure 2 and attached Figure 3 As shown, an intracranial puncture aimer includes a semicircular instrument plate body 3, a side of the semicircular instrument plate body 3 close to the outer arc edge is provided with an arc guide groove 2, an angle scale line is arranged between the arc guide groove 2 and the outer arc edge, and the 0 scale line of the angle scale line is located in the middle position of the outer arc edge.

[0024] A positioning slider 6 is provided on the arc guide groove 2 and can slide along the arc guide groove 2. The positioning slider 6 includes an inner slider arm 64 and an outer slider arm 65. The inner slider arm 64 and the outer slider arm 65 are both rectangular block structures. The two are fixedly connected, and the connection between the two is located in the arc guide groove 2. The length of the inner slider arm 64 is smaller than the length of the outer slider arm 65.

[0025] There is a gap between the inner slider arm 64 and the outer slider arm 65 and the semicircular instrument plate body 3 .

[0026] A positioning block 61 is fixedly provided on the outer slider arm 65, and the positioning block 61 has a recess, which forms a positioning groove 62. A positioning bolt 68 is threadedly connected to the outer slider arm 65 near the edge of the outer slider arm 65, and the end of the positioning bolt 68 can be screwed out of the outer slider arm 65. After the end of the positioning bolt 68 is screwed out, it can tighten the semicircular instrument plate body 3.

[0027] A positioning pin 66 is provided on one side of the inner slider arm 64 . The positioning pin 66 can be painted red and marked prominently. The positioning pin 66 can be observed through the transparent semicircular instrument panel body 3 .

[0028] The bottom of the semicircular instrument plate 3 is provided with a scale, and the 0 scale of the scale at the bottom of the semicircular instrument plate 3 is located in the middle of the bottom plate of the semicircular instrument.

[0029] The left positioning side arm 4 and the right positioning side arm 5 have the same structure, both of which are arc-shaped strip structures. The end of the left positioning side arm 4 has two clamping arms 41, and the two clamping arms 41 are respectively located on both sides of the semicircular instrument plate body 3, and a hinge column 42 is arranged between the two clamping arms 41; the hinge column 42 is fixedly connected to the two clamping arms 41, and the hinge column 42 passes through the semicircular instrument plate body 3, and the two clamping arms 41 can rotate together through the hinge column 42.

[0030] There is a very small gap between the two clamping arms 41 and the semicircular instrument panel body 3, similar to an overfit, and the two clamping arms 41 can stop at one position at any time when rotating, and will not rotate left and right.

[0031] The left positioning side arm 4 and the right positioning side arm 5 are not symmetrically arranged. The left positioning side arm 4 is located 2 cm away from the 0 scale mark of the bottom scale of the semicircular instrument plate 3, and the right positioning side arm 5 is located 1 cm away from the 0 scale mark of the bottom scale of the semicircular instrument plate 3; the semicircular instrument plate can be square or other shapes.

[0032] When in use, the present invention is placed on the patient's head, and the operating angle is calculated according to the distance. When the puncture needle is inserted, one point is positioned on the patient's skull, and the other end is positioned through the positioning groove on the positioning block, which is convenient for puncture and insertion, and the insertion accuracy is high.

Claims

1. An intracranial puncture aimer, comprising a semicircular instrument plate (3), a side of the semicircular instrument plate (3) close to the outer arc edge is provided with an arc guide groove (2), an angle scale line is arranged between the arc guide groove (2) and the outer arc edge, and the 0 scale line of the angle scale line is located at the middle position of the outer arc edge; a positioning slider (6) is arranged on the arc guide groove (2) and can slide along the arc guide groove (2), and the positioning slider (6) comprises an inner slider arm (64) and an outer slider arm (65); the inner slider arm (64) and the outer slider arm (65) are both rectangular block structures, the two are fixedly connected, and the connection between the two is located in the arc guide groove (2), and the length of the inner slider arm (64) is less than that of the outer slider arm ( 65); a positioning block (61) is fixedly provided on the outer slider arm (65), and a recess is provided on the positioning block (61), and the recess forms a positioning groove (62); a positioning bolt (68) is threadedly connected to the outer slider arm (65) near the edge of the outer slider arm (65), and the end of the positioning bolt (68) can be screwed out of the outer slider arm (65), and the end of the positioning bolt (68) can be screwed out to tighten the semicircular instrument plate (3); the left positioning side arm (4) and the right positioning side arm (5) are not symmetrically arranged, and the left positioning side arm (4) is at a position of 2 cm from the 0 scale of the bottom scale of the semicircular instrument plate (3), and the right positioning side arm (5) is arranged at a position of 1 cm from the 0 scale of the bottom scale of the semicircular instrument plate (3).

2. An intracranial puncture aiming device as claimed in claim 1, characterized in that: There is a gap between the inner slider arm (64) and the outer slider arm (65) and the semicircular instrument plate body (3).

3. An intracranial puncture aiming device as claimed in claim 2, characterized in that: A positioning pin (66) is arranged on one side of the inner slider arm (64).

4. An intracranial puncture aiming device as claimed in claim 3, characterized in that: The bottom of the semicircular instrument plate body (3) is provided with a scale, and the 0 scale of the scale at the bottom of the semicircular instrument plate body (3) is located in the middle of the bottom plate body of the semicircular instrument.

5. An intracranial puncture aiming device as claimed in claim 4, characterized in that: The left positioning side arm (4) and the right positioning side arm (5) have the same structure, both of which are arc-shaped strip structures. The end of the left positioning side arm (4) is provided with two clamping arms (41), and the two clamping arms (41) are respectively located on both sides of the semicircular instrument plate body (3). A hinge column (42) is arranged between the two clamping arms (41); the hinge column (42) is fixedly connected to the two clamping arms (41), and the hinge column (42) passes through the semicircular instrument plate body (3).

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