Magento 1.7 – How to Link to Product’s Admin Edit Page from Order View Page

When viewing an order, my employees would like to be able to click on the product's name or SKU, and for that to be a link to that product's Product Info edit page.

I figured out how to change the product name into a link, with that link being the url of the product page on Front End, but I don't want the link going to the front end, I need it to link to the products edit page in Admin Dashboard.

This is the code I used in:

app/design/adminhtml/default/default/template/sales/order/view/items/renderer/default.phtml

<div class="item-text">
<?php $_pullProduct = Mage::getModel('catalog/product')->loadByAttribute('sku', $_item->getData('sku')); ?>
<a target="_blank" rel="external" href="<?php echo Mage::getUrl() . $_pullProduct->getData('url_path'); ?>"><?php echo $this->getColumnHtml($_item, 'name') ?></a>
</div>

…and this properly links me to the product frontend page. Now, as I said, that's not what I want, so how do I get this to be a link to the product's admin dashboard edit page?

I attempted at changing the above code in the same file to:

<div class="item-text">
<?php $_pullProduct = Mage::getModel('catalog/product')->loadByAttribute('sku', $_item->getData('sku')); ?>
<a target="_blank" rel="external" href="<?php echo Mage::getSingleton('adminhtml/url')->getUrl('adminhtml/catalog_product/edit', array('id' => $this->getProduct()->getId()))?>"><?php echo $this->getColumnHtml($_item, 'name') ?></a>
</div>

…however that's not right, and the Order View page breaks when I try this. I feel like I'm getting close, can any of you help me in the right direction, please?