A needle-finding device for use in an operating room

Abstract

The application relates to the technical field of medical auxiliary devices, in particular to a nursing needle searching device for an operating room, which comprises a shell, rotating parts, a handle and the like; the shell is rotationally connected with a plurality of rotating parts, each rotating part is composed of two wheels and a rotating rod; and the left side of the shell is rotationally connected with the handle. The surgical needle is attracted by the magnetic rod and the magnetic plate and attached to the baffle, the baffle is driven to rotate clockwise by the magnetic rod, the baffle drives the surgical needle to move to the upper side under the action of the magnetic rod and the magnetic plate, the distance between the baffle and the magnetic plate is certain, the attraction of the magnetic plate to the surgical needle is reduced, the magnetic force of the magnetic plate is not too large, and the surgical needle is not easy to hurt the medical staff when the medical staff manually takes down the surgical needle, and the problem of medical infection accidents is solved.

Description

Technical Field

[0001] This invention relates to the field of medical auxiliary device technology, and in particular to a needle-finding device for use in the operating room. Background Technology

[0002] During surgery, medical staff use sutures to close surgical wounds to ensure postoperative recovery. In the event of an emergency, such as a sudden change in the patient's condition, the surgical team may experience coordination errors during the emergency response. This could lead to a surgical member dropping a needle while passing it, requiring the medical staff to unpack a spare instrument. However, due to the urgency of the surgical situation, the medical staff may panic while unpacking the spare instrument, resulting in the needle scattering all over the floor.

[0003] To ensure patient safety, the number of surgical needles needs to be counted after surgery to prevent medical accidents. However, surgical needles are too small to be found with the naked eye. Currently, medical staff use magnetic lanyards to search for the needles on the ground and attract them. However, the magnetic force of the lanyards is strong, and when removing the needles later, the needles can easily prick the medical staff, leading to medical infection accidents. Summary of the Invention

[0004] To overcome the drawback that the strong magnetic attraction of the magnetic plate can easily cause surgical needles to prick medical staff and lead to medical infection accidents when removing surgical needles, this invention provides a nursing needle retrieval device for the operating room.

[0005] The technical embodiment of the present invention is as follows: a needle-finding device for use in an operating room, comprising a housing, rotating parts, and a handle; the housing is rotatably connected to several rotating parts, each rotating part consisting of two wheels and a rotating rod; a handle is rotatably connected to the left side of the housing; it also includes a magnetic rod, a baffle, connecting blocks, a magnetic plate, a weak magnetic plate, a first limiting plate, a second limiting plate, and a limiting frame; a magnetic rod is fixedly connected to the rotating rod of each rotating part; a baffle is connected to the common transmission of all magnetic rods; several connecting blocks are fixedly connected to the front and rear sides of the inner side of the housing; all connecting blocks... A magnetic plate is fixedly connected to the block, and the lower surface of the magnetic plate is in contact with the baffle. A weak magnetic plate is fixedly connected inside the shell, and the upper surface of the weak magnetic plate is in contact with the baffle. A non-magnetic part is provided on the right side of the weak magnetic plate. A first limiting plate is fixedly connected inside the shell, and the first limiting plate is located to the right of the weak magnetic plate. There is a gap between the weak magnetic plate and the first limiting plate, and the lower surface of the first limiting plate is in contact with the baffle. A second limiting plate is fixedly connected inside the shell, and the second limiting plate is located below the first limiting plate. The upper surface of the second limiting plate is in contact with the baffle. A limiting frame is fixedly connected inside the shell, and the limiting frame is located above the weak magnetic plate. The lower surface of the limiting frame is in contact with the baffle.

[0006] More preferably, the magnetic rod on the left is divided into four equal parts, with the two obliquely opposite parts being magnetic and the other two parts being non-magnetic connectors.

[0007] More preferably, the left end of the limiting strip located in the middle of the limiting frame is provided with a rounded corner.

[0008] More preferably, the left end of the limiting plate is provided with an arc surface.

[0009] More preferably, it also includes a protective ring; a protective ring is fixed to the inner side of the housing, and there is a gap between the protective ring and the magnetic rod.

[0010] More preferably, it also includes an arc-shaped rod, a scraper, and a collection frame; the arc-shaped rod is fixedly connected to the inner side of the housing; the arc-shaped rod is slidably connected to the scraper, the scraping part of the scraper is in contact with the surface of the baffle, and the scraper is elastically set so that the scraper can better fit the surface of the baffle; a collection frame is slidably connected to the front side of the housing.

[0011] More preferably, the scraper has an arc section.

[0012] More preferably, the collection box is provided with a lifting part.

[0013] More preferably, it also includes a round rod and a magnetic column; the magnetic column is slidably connected inside the handle; the round rod is fixedly connected to the magnetic column.

[0014] More preferably, the outer surface of the magnetic post has several concave surfaces.

[0015] Compared with the prior art, the present invention has the following advantages: The present invention uses a magnetic rod and a magnetic plate to attract and attach the surgical needle to a baffle. The magnetic rod drives the baffle to rotate clockwise, so that the baffle moves the surgical needle synchronously upward under the action of the magnetic rod and the magnetic plate. At this time, because there is a certain distance between the baffle and the magnetic plate, the attraction force of the magnetic plate on the surgical needle is reduced, avoiding the problem that the magnetic force of the magnetic plate is too large, which may easily cause the surgical needle to puncture the medical staff when the surgical needle is manually removed later, leading to medical infection accidents.

[0016] This invention guides the surgical needle to the inside of the baffle through a connecting block, so that the entire surgical needle is located inside the baffle to ensure stable attraction of the surgical needle. By setting a protective ring on the left magnetic rod, the surgical needle is intercepted by the protective ring when it falls, preventing the surgical needle from falling to the ground again and causing the surgical needle to be missed.

[0017] This invention incorporates a weak magnetic plate that attracts the surgical needle above the left magnetic rod. When the non-magnetic connector of the left magnetic rod rotates to the upper right, the weak magnetic plate quickly attracts the surgical needle, preventing the needle from moving due to friction during the rotation of the baffle. The baffle's rotation is based on the magnetic rod; when the magnetic part of the left magnetic rod rotates to the upper right, the baffle's movement distance is short, and the surgical needle may be attracted back by the magnetic rod.

[0018] This invention uses a round rod to insert a magnetic column into the gap of the operating table for searching. When the magnetic column approaches the surgical needle, it attracts the needle. Then, medical staff pull the magnetic column out of the gap using the round rod, simultaneously bringing the surgical needle out as well, thus locating the surgical needle. By creating a concave surface on the magnetic column, when the magnetic column is inserted into the gap of the operating table, the medical staff can rotate the magnetic column by holding the round rod, allowing the surgical needle attracted by the magnetic column to enter the concave surface. This avoids the surgical needle coming into contact with the inner wall of the gap of the operating table, which could easily cause the surgical needle to fall out again. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the first perspective of the operating room nursing needle finding device of the present invention.

[0020] Figure 2 This is a schematic diagram of the second perspective of the operating room nursing needle finding device of the present invention.

[0021] Figure 3 This is a sectional view of the housing of the operating room nursing needle finding device of the present invention.

[0022] Figure 4 This is a schematic diagram of the structure of the connecting block, magnetic plate, weak magnetic plate, limiting plate one, limiting plate two and limiting frame magnetic rod assembly of the operating room nursing needle finding device of the present invention.

[0023] Figure 5 This is a schematic diagram of the arc-shaped rod and scraper disclosed in the operating room nursing needle finding device of the present invention;

[0024] Figure 6 This is a schematic diagram of the magnetic rod disclosed in the operating room nursing needle finding device of the present invention;

[0025] Figure 7 This is an exploded view of the round rod and magnetic column of the operating room nursing needle finding device of the present invention;

[0026] Figure 8 This is a diagram showing the working state of the handle of the operating room nursing needle finding device of the present invention.

[0027] Figure 9This is a schematic diagram of the structure of the magnetic rod, baffle, weak magnetic plate, limiting plate one, limiting plate two and limiting frame combination disclosed in the operating room nursing needle finding device of the present invention.

[0028] The components in the attached diagram are labeled as follows: 1-House, 2-Rotating component, 3-Handle, 4-Magnetic rod, 5-Baffle, 6-Connecting block, 7-Magnetic plate, 8-Weak magnetic plate, 9-Limiting plate one, 10-Limiting plate two, 11-Limiting frame, 12-Protective ring, 201-Arc-shaped rod, 202-Scraper, 203-Collection frame, 301-Round rod, 302-Magnetic column, 111-Rounded corner, 81-Non-magnetic part, 91-Arc surface, 2021-Arc part, 20301-Lifting part, 3021-Concave surface. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1

[0031] An operating room needle locator, such as Figure 1-6 and Figure 8-9 As shown, it includes a housing 1, rotating parts 2, and a handle 3; the housing 1 is rotatably connected to two rotating parts 2, each rotating part 2 consisting of two wheels and a rotating rod; the handle 3 is rotatably connected to the left side of the housing 1.

[0032] It also includes a magnetic rod 4, a baffle 5, a connecting block 6, a magnetic plate 7, a weak magnetic plate 8, a first limiting plate 9, a second limiting plate 10, and a limiting frame 11; a magnetic rod 4 is fixedly connected to the rotating rod of each rotating component 2; the baffle 5 is connected to the common transmission of all magnetic rods 4; several connecting blocks 6 are fixedly connected to the front and rear sides of the inner shell 1; a magnetic plate 7 is fixedly connected to all connecting blocks 6, and the lower surface of the magnetic plate 7 is in contact with the baffle 5; a weak magnetic plate 8 is fixedly connected inside the shell 1, and the upper surface of the weak magnetic plate 8 is in contact with the baffle 5. A non-magnetic part 81 is provided on the right side of the weak magnetic plate 8; a limiting plate 9 is fixedly connected inside the housing 1, and the limiting plate 9 is located to the right of the weak magnetic plate 8. There is a gap between the weak magnetic plate 8 and the limiting plate 9, and the lower surface of the limiting plate 9 is in contact with the baffle 5; a limiting plate 10 is fixedly connected inside the housing 1, and the limiting plate 10 is located below the limiting plate 9. The upper surface of the limiting plate 10 is in contact with the baffle 5; a limiting frame 11 is fixedly connected inside the housing 1, and the limiting frame 11 is located above the weak magnetic plate 8. The baffle 5 is in contact with the lower surface of the limiting frame 11.

[0033] The magnetic rod 4 on the left is divided into four equal parts. The two diagonally opposite parts are magnetic, while the other two parts are non-magnetic connectors. This prevents the surgical needle from staying on the surface of the baffle 5 above the magnetic rod 4 on the left, and from being moved to the right by the baffle 5, which would cause the surgical needle to accumulate and affect the collection by medical staff.

[0034] The left end of the limiting strip located in the middle of the limiting frame 11 is provided with a rounded corner 111 to facilitate the movement of the surgical needle through the limiting frame 11 by the baffle 5.

[0035] The left end of the limiting plate 9 is provided with an arc surface 91. By setting the arc surface 91, the surgical needle is guided to the arc surface 91, so as to avoid the surgical needle from entering between the limiting plate 9 and the baffle 5 under the continuous driving of the baffle 5, causing the baffle 5 to move and get stuck.

[0036] It also includes a protective ring 12; the protective ring 12 is fixed to the inner side of the housing 1, and there is a gap between the protective ring 12 and the magnetic rod 4.

[0037] It also includes an arc-shaped rod 201, a scraper 202, and a collection frame 203; the arc-shaped rod 201 is fixedly connected to the inner side of the housing 1; the arc-shaped rod 201 is damped and slidably connected to the scraper 202, the scraping part of the scraper 202 is in contact with the surface of the baffle 5, and the scraper 202 is elastically set so that the scraper 202 better fits the surface of the baffle 5; the collection frame 203 is slidably connected to the front side of the inner side of the housing 1.

[0038] The scraper 202 is provided with an arc 2021, which can better scrape the surgical needle on the baffle 5.

[0039] The collection box 203 is provided with a lifting part 20301, which makes it easy for medical staff to remove the collection box 203 from the housing 1.

[0040] The following describes how the above embodiments work:

[0041] After surgery, the surgical needles need to be counted to prevent any needles from being left inside the patient and causing medical accidents. When counting the needles after surgery, if the number is incorrect, the needles need to be located immediately. However, surgical needles are small and difficult to spot with the naked eye. Therefore, a magnetic locator is used to find them. Medical staff manually sweep the operating room floor with the magnetic locator to search for needles. However, to ensure no needles are missed, multiple sweeps are required. Furthermore, because medical staff manually move the magnetic locator, their hands easily become tired, making it difficult to maintain the locator at the same height as the floor for extended periods. When the locator is raised too high, the magnetic force weakens, leading to needle loss. The magnetic chuck cannot attract the surgical needle. Therefore, this invention allows medical staff to hold the handle 3, which pushes the housing 1 to rotate the rotating component 2 clockwise from front to back. This causes the housing 1 to move the magnetic rod 4, the baffle 5, the connecting block 6, the magnetic plate 7, the weak magnetic plate 8, the first limiting plate 9, the second limiting plate 10, and the limiting frame 11 synchronously. The surgical needle is searched using a trolley, avoiding the need for medical staff to repeatedly sweep the ground for inspection, which can cause hand fatigue and prevent the magnetic chuck from maintaining the same height as the ground for extended periods. This also addresses the problem of the magnetic chuck failing to attract the surgical needle when it is raised too high. When the surgical needle is attracted to the magnetic plate 7, the strong magnetic force of the magnetic plate 7 makes it easy for medical staff to manually remove the surgical needle later. To prevent surgical needle injuries to medical staff and potential medical infection incidents, the following mechanism is implemented: When the housing 1 moves the rotating component 2 and magnetic rod 4 to the right, the rotating component 2 drives the magnetic rod 4 to rotate synchronously. As the magnetic rod 4 rotates, it causes the transmission baffle 5 to rotate clockwise from front to back. The baffle 5 rotates clockwise while adhering to the lower surface of the magnetic plate 7. Thus, when the housing 1 moves the rotating component 2 and magnetic rod 4 to the right to search for a fallen surgical needle, the needle will first be attracted by the magnetic rod 4 on the right and adhere to the baffle 5. As the housing 1 continues to move the rotating component 2 and magnetic rod 4 to the right, the magnetic rod 4 rotates, and the baffle 5 rotates clockwise while adhering to the lower surface of the magnetic plate 7. At this time, the magnetic plate 7 will attract the surgical needle, allowing it to follow the movement of the transmission baffle 5. The needle moves step by step, and the magnetic force of the right magnetic rod 4 is less than that of the magnetic plate 7, which facilitates the transition of the surgical needle to be attracted by the magnetic plate 7. When the surgical needle moves with the baffle 5 to the left end of the magnetic plate 7, as the baffle 5 continues to rotate, the surgical needle will be transferred to be attracted by the left magnetic rod 4. As the left magnetic rod 4 and the baffle 5 continue to rotate, the baffle 5 moves the surgical needle upward. At this time, because there is a certain distance between the baffle 5 and the magnetic plate 7, the attraction of the magnetic plate 7 on the surgical needle is reduced, avoiding the problem that the magnetic force of the magnetic plate 7 is too large, which may easily cause the surgical needle to puncture the medical staff when the surgical needle is manually removed later, leading to medical infection accidents. In addition, the magnetic force of the left magnetic rod 4 is greater than that of the magnetic plate 7, which facilitates the transition of the surgical needle to be attracted by the left magnetic rod 4.

[0042] Considering that when the magnetic rod 4 on the right attracts the surgical needle by magnetic force, the position of the surgical needle is uncertain. If only a part of the surgical needle is within the attraction range of the magnetic rod 4, the attraction of the surgical needle will be unstable. Furthermore, when the baffle 5 moves the surgical needle above the magnetic rod 4 on the left, the surgical needle is likely to fall back to the ground. Therefore, when the baffle 5 moves the surgical needle, the connecting block 6 guides the surgical needle to the inside of the baffle 5, so that the entire surgical needle is located inside the baffle 5, in order to ensure stable attraction of the surgical needle.

[0043] Considering that during the process of the baffle 5 moving the surgical needle above the left magnetic rod 4, when the surgical needle moves to the left quarter point of the magnetic rod 4, the magnetically attracted surface of the surgical needle is small, and the surgical needle is also affected by its own weight, causing the surgical needle to easily fall downwards. Since the entire invention moves to the right, when the surgical needle falls to the ground, it may be missed, increasing the difficulty of the search. Therefore, by setting a protective ring 12 on the left magnetic rod 4, the surgical needle is intercepted by the protective ring 12 when it falls, preventing the surgical needle from falling again. The problem of surgical needles being missed after falling to the ground can be addressed by having medical personnel remove the protective ring 12 after the search is completed. The surgical needles collected on the protective ring 12 can then be removed. In addition, as the baffle 5 moves the surgical needle above the left magnetic rod 4, the protective ring 12 can also restrict the surgical needle. That is, when the surgical needle moves with the baffle 5 between the left magnetic rod 4 and the protective ring 12, the protective ring 12 pushes the suspended surgical needle, making it easier for the surgical needle to contact the baffle 5.

[0044] Furthermore, considering that when the surgical needle is moved by the baffle 5 to above the left magnetic rod 4, the surgical needle is constantly attracted by the magnetic force of the left magnetic rod 4, causing it to remain on the surface of the baffle 5 above the left magnetic rod 4 and not be moved to the right by the baffle 5, the left magnetic rod 4 is divided into four equal parts. The two diagonally opposite parts are magnetic, while the other two parts are non-magnetic connectors. When the surgical needle is moved by the baffle 5 to above the left magnetic rod 4, as the left magnetic rod 4 continues to rotate, when the non-magnetic connectors rotate to the upper right, the left magnetic rod 4 loses its attraction to the surgical needle. This allows the baffle 5 to continue moving the surgical needle, preventing it from remaining on the surface of the baffle 5 above the left magnetic rod 4 and being moved to the right by the baffle 5, which would cause the surgical needle to accumulate and affect the collection by medical staff. It also prevents the surgical needle from being constantly attracted by the left magnetic rod 4, which could easily cause the medical staff to be pricked by the surgical needle during collection.

[0045] Meanwhile, by setting a weak magnetic plate 8, the weak magnetic plate 8 attracts the surgical needle above the left magnetic rod 4. Then, when the non-magnetic connector of the left magnetic rod 4 rotates to the upper right, the weak magnetic plate 8 quickly attracts the surgical needle, avoiding the movement of the surgical needle by friction during the rotation of the baffle 5. The rotation of the baffle 5 is based on the magnetic rod 4. That is, when the magnetic part of the left magnetic rod 4 rotates to the upper right, the movement distance of the baffle 5 is relatively short, and there is a problem that the surgical needle may be attracted back by the magnetic rod 4. Meanwhile, a limiting plate 9 is provided to the right of the weak magnetic plate 8, and the limiting plate 9 is located above the baffle 5. The limiting plate 9 blocks and restricts the surgical needles driven by the baffle 5, causing the surgical needles to gather on the left side of the limiting plate 9. The weak magnetic plate 8 is set with a non-magnetic part 81 facing the left side of the limiting plate 9, which facilitates the surgical needles to detach from the weak magnetic plate 8. When the medical staff observes that there are enough surgical needles blocked on the left side of the limiting plate 9, the medical staff can collect the surgical needles. However, considering that although the magnetic attraction of the surgical needles is greatly reduced when the medical staff collect the surgical needles, there is still a risk of the surgical needles pricking the medical staff, the limiting plate 10 and the limiting frame 11 are set. The limiting plate 10 is located below the limiting plate 9 and contacts the lower surface of the baffle 5, and the limiting frame 11 is located above the weak magnetic plate 8 and contacts the upper surface of the baffle 5. Thus, the limiting plate 10 and the limiting frame 11 work together with the weak magnetic plate 8 and the limiting plate 9 to restrict the baffle 5, so that the upper middle part of the baffle 5 is in a non-magnetic position. Figure 4 The curved shape shown allows the surgical needle to slide into the collection box 203 for collection when the baffle 5 moves the surgical needle to the upper middle part, eliminating the need for medical staff to manually collect the surgical needle. Then, the medical staff can pull out the collection box 203 through the lifting part 20301 and invert the surgical needles collected in the collection box 203 onto the external tray for counting. At the same time, by setting the curved surface 91, the surgical needle is guided onto the curved surface 91, avoiding the problem of the surgical needle entering between the limiting plate 9 and the baffle 5 under the continuous movement of the baffle 5, which would cause the baffle 5 to become stuck.

[0046] Meanwhile, when the baffle 5 moves the surgical needle to the upper middle part, although the surgical needle can slide into the collection frame 203 for collection by making the upper middle part of the baffle 5 into an arc state, some surgical needles will still stay on the baffle 5. Therefore, after the surgical needles are searched, the medical staff can manually pull the scraper 202 to slide forward along the arc rod 201, so that the scraper 202 scrapes the surgical needles that are staying on the baffle 5 into the collection frame 203 for collection.

[0047] When it is necessary to access the underside of the operating table, medical staff turn handle 3 to a horizontal position, such as... Figure 8As shown, at this time, the upper surface of the handle 3 is flush with the upper surface of the housing 1, so that when the present invention enters the bottom of the operating table, the handle 3 will not collide with the bottom of the operating table, thus avoiding affecting the problem of the present invention searching for the surgical needle.

[0048] Example 2

[0049] Based on Example 1, such as Figure 1-2 and Figure 7 As shown, it also includes a round rod 301 and a magnetic column 302; the magnetic column 302 is slidably connected inside the handle 3; the round rod 301 is fixedly connected to the magnetic column 302.

[0050] The outer side of the magnetic column 302 has three concave surfaces 3021 that are equidistantly distributed in a ring. By adsorbing the surgical needle into the concave surface 3021, the problem of the surgical needle falling out again when the magnetic column 302 pulls the surgical needle out of the gap of the operating table is avoided.

[0051] The following describes how the above embodiments work:

[0052] Because the operating table is composed of multiple rotating sections, there are gaps at the joints of the rotating parts. Therefore, when it is necessary to search through these gaps on the operating table, medical staff manually pull the round rod 301 out of the handle 3, causing the round rod 301 to pull the magnetic column 302 out of the handle 3, and extending the round rod 301 to its longest position. Figure 7 As shown, medical staff then used the round rod 301 to insert the magnetic column 302 into the gap of the operating table to search. When the magnetic column 302 approached the surgical needle, it attracted the needle. The medical staff then used the round rod 301 to pull the magnetic column 302 out of the gap of the operating table, simultaneously bringing the surgical needle out as well, thus locating the needle. However, due to the small size of the gap in the operating table, when the magnetic column 302 attracted the surgical needle, the needle... The needle is prone to contact with the inner wall of the gap, which can easily cause it to fall out again, thus increasing the search time for the needle. Therefore, by creating a concave surface 3021 on the magnetic column 302, when the magnetic column 302 is inserted into the gap of the operating table, the medical staff can rotate the magnetic column 302 by holding the round rod 301, so that the surgical needle attracted by the magnetic column 302 can enter the concave surface 3021, thereby avoiding the problem of the surgical needle contacting the inner wall of the gap of the operating table and falling out again.

[0053] Although this disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made to this disclosure without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of this disclosure should not be limited to the above embodiments, but should be defined not only by the appended claims, but also by their equivalents.

Claims

1. A needle-finding device for use in an operating room, comprising a housing (1), rotating parts (2), and a handle (3); the housing (1) is rotatably connected to a plurality of rotating parts (2), each rotating part (2) consisting of two wheels and a rotating rod; the handle (3) is rotatably connected to the left side of the housing (1); characterized in that: It also includes a magnetic rod (4), a baffle (5), a connecting block (6), a magnetic plate (7), a weak magnetic plate (8), a first limiting plate (9), a second limiting plate (10), and a limiting frame (11); a magnetic rod (4) is fixedly connected to the rotating rod of each rotating component (2); the common transmission connection of all magnetic rods (4) is a baffle (5); several connecting blocks (6) are fixedly connected to the front and rear sides of the inner shell (1); a magnetic plate (7) is fixedly connected to all connecting blocks (6), and the lower surface of the magnetic plate (7) is in contact with the baffle (5); a weak magnetic plate (8) is fixedly connected inside the shell (1), and the upper surface of the weak magnetic plate (8) is in contact with the baffle (5). A non-magnetic part (81) is provided on the right side of the weak magnetic plate (8); a limiting plate (9) is fixedly connected inside the housing (1), and the limiting plate (9) is located to the right of the weak magnetic plate (8). There is a gap between the weak magnetic plate (8) and the limiting plate (9). The lower surface of the limiting plate (9) is in contact with the baffle (5); a limiting plate (10) is fixedly connected inside the housing (1), and the limiting plate (10) is located below the limiting plate (9). The upper surface of the limiting plate (10) is in contact with the baffle (5); a limiting frame (11) is fixedly connected inside the housing (1), and the limiting frame (11) is located above the weak magnetic plate (8). The baffle (5) is in contact with the lower surface of the limiting frame (11).

2. The operating room needle locator according to claim 1, characterized in that: The magnetic rod (4) on the left is divided into four equal parts. The two obliquely opposite parts are magnetic, while the other two parts are non-magnetic connectors.

3. The operating room needle locator according to claim 1, characterized in that: The left end of the limiting strip located in the middle of the limiting frame (11) is provided with a rounded corner (111).

4. A needle-finding device for use in the operating room according to claim 1, characterized in that: The left end of the limiting plate (9) is provided with an arc surface (91).

5. A needle-finding device for use in the operating room according to any one of claims 1-4, characterized in that: It also includes a protective ring (12); the protective ring (12) is fixed to the inside of the housing (1), and there is a gap between the protective ring (12) and the magnetic rod (4).

6. A needle-finding device for use in the operating room according to claim 5, characterized in that: It also includes an arc-shaped rod (201), a scraper (202) and a collection frame (203); the arc-shaped rod (201) is fixedly connected to the inner side of the housing (1); the arc-shaped rod (201) is damped and slidably connected to the scraper (202), the scraping part of the scraper (202) is in contact with the surface of the baffle (5), and the scraper (202) is elastically set so that the scraper (202) fits the surface of the baffle (5) better; the collection frame (203) is slidably connected to the front side of the inner side of the housing (1).

7. A needle-finding device for use in the operating room according to claim 6, characterized in that: The scraper (202) is provided with an arc section (2021).

8. A needle-finding device for use in the operating room according to claim 6, characterized in that: The collection box (203) is provided with a lifting part (20301).

9. A needle-finding device for use in the operating room according to claim 1, characterized in that: It also includes a round rod (301) and a magnetic column (302); the magnetic column (302) is slidably connected inside the handle (3); the round rod (301) is fixedly connected to the magnetic column (302).

10. A needle-finding device for use in the operating room according to claim 9, characterized in that: The outer side of the magnetic column (302) has several concave surfaces (3021).

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